xcompmgr/nouveau not allowing opacity change [SOLVED]

arglinug · 2019-02-16 20:14:33

I've been wanting to change my st terminal window opacity for some time now and haven't gotten it to work. I did the latest alpha patch (along with others that worked perfectly) but changing the alpha int to something lower than 0xff (currently at 0xcc) and recompiling/running xcompmgr doesn't do anything. Even setting xcompmgr's opacity option below 1 doesn't work.

I have a hunch its my NVidia 9800 gx card or the driver. Has anyone had a similar experience on a macbook?

Last edited by arglinug (2019-02-18 19:32:01)

seth · 2019-02-16 21:11:28

Output of "xwininfo" for an st window
when running xcompmgr, do you get shadows and fading in windows?

hanging the alpha int

Humm?
https://st.suckless.org/patches/alpha/s … 0.8.2.diff uses some float value and multiplication - which patch do you apply?

Also: what window manager? Notice that the patch excludes embedded windows from the ARGB mode.

arglinug · 2019-02-16 21:39:33

I am using i3

Here's the output of xwininfo

[kevin@itunes ~]$ xcompmgr -c &
[kevin@itunes ~]$ xwininfo

xwininfo: Please select the window about which you
          would like information by clicking the
          mouse in that window.

xwininfo: Window id: 0x800006 "st"

  Absolute upper-left X:  18
  Absolute upper-left Y:  38
  Relative upper-left X:  2
  Relative upper-left Y:  2
  Width: 1244
  Height: 744
  Depth: 32
  Visual: 0x6e
  Visual Class: TrueColor
  Border width: 0
  Class: InputOutput
  Colormap: 0x800005 (not installed)
  Bit Gravity State: NorthWestGravity
  Window Gravity State: NorthWestGravity
  Backing Store State: NotUseful
  Save Under State: no
  Map State: IsViewable
  Override Redirect State: no
  Corners:  +18+38  -18+38  -18-18  +18-18
  -geometry 206x61+16-16

I patched using st-alpha-0.8.2.diff (the one you posted) which includes

/* bg opacity */
unsigned int alpha = 0xcc;

in the st config.h

seth · 2019-02-16 22:02:11

I see

+/* bg opacity */
+float alpha = 0.8;

It's an ARGB window, so if compositing principally works, it should be translucent, but your values are too bug.

arglinug · 2019-02-16 22:16:37

Are you saying that 0xcc is too large for the alpha value?

Last edited by arglinug (2019-02-16 22:16:56)

seth · 2019-02-16 22:29:33

In that particular patch, certainly. Alpha is supposed to be a float < 1, last time I checked w/ my elementary teacher, 204 is slightly above 1.
Earlier version of the patch had alpha = 0xcc but significantly differ in its usage.

arglinug · 2019-02-16 22:52:08

Alpha values are read as #/255 so in this case it would be 204/255 so 80% opacity. If I set it as a floating point number it throws errors when I hit make since its supposed to be reading an integer.

Also I have pywal setting all of my colors, don't think that affects anything.

seth · 2019-02-17 07:14:46

No idea how many time I'll have to repeat that, but NOT IN THAT PARTICULAR PATCH.
Please paste your actual patched st.c

arglinug · 2019-02-17 18:55:36

Ok here's the entire thing

/* See LICENSE for license details. */
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <pwd.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <termios.h>
#include <unistd.h>
#include <wchar.h>

#include "st.h"
#include "win.h"

#if   defined(__linux)
 #include <pty.h>
#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
 #include <util.h>
#elif defined(__FreeBSD__) || defined(__DragonFly__)
 #include <libutil.h>
#endif

/* Arbitrary sizes */
#define UTF_INVALID   0xFFFD
#define UTF_SIZ       4
#define ESC_BUF_SIZ   (128*UTF_SIZ)
#define ESC_ARG_SIZ   16
#define STR_BUF_SIZ   ESC_BUF_SIZ
#define STR_ARG_SIZ   ESC_ARG_SIZ
#define HISTSIZE      2000

/* macros */
#define IS_SET(flag)		((term.mode & (flag)) != 0)
#define ISCONTROLC0(c)		(BETWEEN(c, 0, 0x1f) || (c) == '\177')
#define ISCONTROLC1(c)		(BETWEEN(c, 0x80, 0x9f))
#define ISCONTROL(c)		(ISCONTROLC0(c) || ISCONTROLC1(c))
#define ISDELIM(u)		(utf8strchr(worddelimiters, u) != NULL)
#define TLINE(y)		((y) < term.scr ? term.hist[((y) + term.histi - \
				term.scr + HISTSIZE + 1) % HISTSIZE] : \
				term.line[(y) - term.scr])

enum term_mode {
	MODE_WRAP        = 1 << 0,
	MODE_INSERT      = 1 << 1,
	MODE_ALTSCREEN   = 1 << 2,
	MODE_CRLF        = 1 << 3,
	MODE_ECHO        = 1 << 4,
	MODE_PRINT       = 1 << 5,
	MODE_UTF8        = 1 << 6,
	MODE_SIXEL       = 1 << 7,
};

enum cursor_movement {
	CURSOR_SAVE,
	CURSOR_LOAD
};

enum cursor_state {
	CURSOR_DEFAULT  = 0,
	CURSOR_WRAPNEXT = 1,
	CURSOR_ORIGIN   = 2
};

enum charset {
	CS_GRAPHIC0,
	CS_GRAPHIC1,
	CS_UK,
	CS_USA,
	CS_MULTI,
	CS_GER,
	CS_FIN
};

enum escape_state {
	ESC_START      = 1,
	ESC_CSI        = 2,
	ESC_STR        = 4,  /* OSC, PM, APC */
	ESC_ALTCHARSET = 8,
	ESC_STR_END    = 16, /* a final string was encountered */
	ESC_TEST       = 32, /* Enter in test mode */
	ESC_UTF8       = 64,
	ESC_DCS        =128,
};

typedef struct {
	Glyph attr; /* current char attributes */
	int x;
	int y;
	char state;
} TCursor;

typedef struct {
	int mode;
	int type;
	int snap;
	/*
	 * Selection variables:
	 * nb – normalized coordinates of the beginning of the selection
	 * ne – normalized coordinates of the end of the selection
	 * ob – original coordinates of the beginning of the selection
	 * oe – original coordinates of the end of the selection
	 */
	struct {
		int x, y;
	} nb, ne, ob, oe;

	int alt;
} Selection;

/* Internal representation of the screen */
typedef struct {
	int row;      /* nb row */
	int col;      /* nb col */
	Line *line;   /* screen */
	Line *alt;    /* alternate screen */
	Line hist[HISTSIZE]; /* history buffer */
	int histi;    /* history index */
	int scr;      /* scroll back */
	int *dirty;   /* dirtyness of lines */
	TCursor c;    /* cursor */
	int ocx;      /* old cursor col */
	int ocy;      /* old cursor row */
	int top;      /* top    scroll limit */
	int bot;      /* bottom scroll limit */
	int mode;     /* terminal mode flags */
	int esc;      /* escape state flags */
	char trantbl[4]; /* charset table translation */
	int charset;  /* current charset */
	int icharset; /* selected charset for sequence */
	int *tabs;
} Term;

/* CSI Escape sequence structs */
/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
typedef struct {
	char buf[ESC_BUF_SIZ]; /* raw string */
	int len;               /* raw string length */
	char priv;
	int arg[ESC_ARG_SIZ];
	int narg;              /* nb of args */
	char mode[2];
} CSIEscape;

/* STR Escape sequence structs */
/* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
typedef struct {
	char type;             /* ESC type ... */
	char buf[STR_BUF_SIZ]; /* raw string */
	int len;               /* raw string length */
	char *args[STR_ARG_SIZ];
	int narg;              /* nb of args */
} STREscape;

static void execsh(char *, char **);
static void stty(char **);
static void sigchld(int);
static void ttywriteraw(const char *, size_t);

static void csidump(void);
static void csihandle(void);
static void csiparse(void);
static void csireset(void);
static int eschandle(uchar);
static void strdump(void);
static void strhandle(void);
static void strparse(void);
static void strreset(void);

static void tprinter(char *, size_t);
static void tdumpsel(void);
static void tdumpline(int);
static void tdump(void);
static void tclearregion(int, int, int, int);
static void tcursor(int);
static void tdeletechar(int);
static void tdeleteline(int);
static void tinsertblank(int);
static void tinsertblankline(int);
static int tlinelen(int);
static void tmoveto(int, int);
static void tmoveato(int, int);
static void tnewline(int);
static void tputtab(int);
static void tputc(Rune);
static void treset(void);
static void tscrollup(int, int, int);
static void tscrolldown(int, int, int);
static void tsetattr(int *, int);
static void tsetchar(Rune, Glyph *, int, int);
static void tsetdirt(int, int);
static void tsetscroll(int, int);
static void tswapscreen(void);
static void tsetmode(int, int, int *, int);
static int twrite(const char *, int, int);
static void tfulldirt(void);
static void tcontrolcode(uchar );
static void tdectest(char );
static void tdefutf8(char);
static int32_t tdefcolor(int *, int *, int);
static void tdeftran(char);
static void tstrsequence(uchar);
static void tsetcolor(int, int, int, uint32_t, uint32_t);

static void drawregion(int, int, int, int);

static void selnormalize(void);
static void selscroll(int, int);
static void selsnap(int *, int *, int);

static size_t utf8decode(const char *, Rune *, size_t);
static Rune utf8decodebyte(char, size_t *);
static char utf8encodebyte(Rune, size_t);
static char *utf8strchr(char *, Rune);
static size_t utf8validate(Rune *, size_t);

static char *base64dec(const char *);
static char base64dec_getc(const char **);

static ssize_t xwrite(int, const char *, size_t);

/* Globals */
static Term term;
static Selection sel;
static CSIEscape csiescseq;
static STREscape strescseq;
static int iofd = 1;
static int cmdfd;
static pid_t pid;

static uchar utfbyte[UTF_SIZ + 1] = {0x80,    0, 0xC0, 0xE0, 0xF0};
static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
static Rune utfmin[UTF_SIZ + 1] = {       0,    0,  0x80,  0x800,  0x10000};
static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};

ssize_t
xwrite(int fd, const char *s, size_t len)
{
	size_t aux = len;
	ssize_t r;

	while (len > 0) {
		r = write(fd, s, len);
		if (r < 0)
			return r;
		len -= r;
		s += r;
	}

	return aux;
}

void *
xmalloc(size_t len)
{
	void *p;

	if (!(p = malloc(len)))
		die("malloc: %s\n", strerror(errno));

	return p;
}

void *
xrealloc(void *p, size_t len)
{
	if ((p = realloc(p, len)) == NULL)
		die("realloc: %s\n", strerror(errno));

	return p;
}

char *
xstrdup(char *s)
{
	if ((s = strdup(s)) == NULL)
		die("strdup: %s\n", strerror(errno));

	return s;
}

size_t
utf8decode(const char *c, Rune *u, size_t clen)
{
	size_t i, j, len, type;
	Rune udecoded;

	*u = UTF_INVALID;
	if (!clen)
		return 0;
	udecoded = utf8decodebyte(c[0], &len);
	if (!BETWEEN(len, 1, UTF_SIZ))
		return 1;
	for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
		udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
		if (type != 0)
			return j;
	}
	if (j < len)
		return 0;
	*u = udecoded;
	utf8validate(u, len);

	return len;
}

Rune
utf8decodebyte(char c, size_t *i)
{
	for (*i = 0; *i < LEN(utfmask); ++(*i))
		if (((uchar)c & utfmask[*i]) == utfbyte[*i])
			return (uchar)c & ~utfmask[*i];

	return 0;
}

size_t
utf8encode(Rune u, char *c)
{
	size_t len, i;

	len = utf8validate(&u, 0);
	if (len > UTF_SIZ)
		return 0;

	for (i = len - 1; i != 0; --i) {
		c[i] = utf8encodebyte(u, 0);
		u >>= 6;
	}
	c[0] = utf8encodebyte(u, len);

	return len;
}

char
utf8encodebyte(Rune u, size_t i)
{
	return utfbyte[i] | (u & ~utfmask[i]);
}

char *
utf8strchr(char *s, Rune u)
{
	Rune r;
	size_t i, j, len;

	len = strlen(s);
	for (i = 0, j = 0; i < len; i += j) {
		if (!(j = utf8decode(&s[i], &r, len - i)))
			break;
		if (r == u)
			return &(s[i]);
	}

	return NULL;
}

size_t
utf8validate(Rune *u, size_t i)
{
	if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
		*u = UTF_INVALID;
	for (i = 1; *u > utfmax[i]; ++i)
		;

	return i;
}

static const char base64_digits[] = {
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0,
	63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, -1, 0, 0, 0, 0, 1,
	2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
	22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34,
	35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

char
base64dec_getc(const char **src)
{
	while (**src && !isprint(**src)) (*src)++;
	return *((*src)++);
}

char *
base64dec(const char *src)
{
	size_t in_len = strlen(src);
	char *result, *dst;

	if (in_len % 4)
		in_len += 4 - (in_len % 4);
	result = dst = xmalloc(in_len / 4 * 3 + 1);
	while (*src) {
		int a = base64_digits[(unsigned char) base64dec_getc(&src)];
		int b = base64_digits[(unsigned char) base64dec_getc(&src)];
		int c = base64_digits[(unsigned char) base64dec_getc(&src)];
		int d = base64_digits[(unsigned char) base64dec_getc(&src)];

		*dst++ = (a << 2) | ((b & 0x30) >> 4);
		if (c == -1)
			break;
		*dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
		if (d == -1)
			break;
		*dst++ = ((c & 0x03) << 6) | d;
	}
	*dst = '\0';
	return result;
}

void
selinit(void)
{
	sel.mode = SEL_IDLE;
	sel.snap = 0;
	sel.ob.x = -1;
}

int
tlinelen(int y)
{
	int i = term.col;

	if (TLINE(y)[i - 1].mode & ATTR_WRAP)
		return i;

	while (i > 0 && TLINE(y)[i - 1].u == ' ')
		--i;

	return i;
}

void
selstart(int col, int row, int snap)
{
	selclear();
	sel.mode = SEL_EMPTY;
	sel.type = SEL_REGULAR;
	sel.alt = IS_SET(MODE_ALTSCREEN);
	sel.snap = snap;
	sel.oe.x = sel.ob.x = col;
	sel.oe.y = sel.ob.y = row;
	selnormalize();

	if (sel.snap != 0)
		sel.mode = SEL_READY;
	tsetdirt(sel.nb.y, sel.ne.y);
}

void
selextend(int col, int row, int type, int done)
{
	int oldey, oldex, oldsby, oldsey, oldtype;

	if (sel.mode == SEL_IDLE)
		return;
	if (done && sel.mode == SEL_EMPTY) {
		selclear();
		return;
	}

	oldey = sel.oe.y;
	oldex = sel.oe.x;
	oldsby = sel.nb.y;
	oldsey = sel.ne.y;
	oldtype = sel.type;

	sel.oe.x = col;
	sel.oe.y = row;
	selnormalize();
	sel.type = type;

	if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type)
		tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));

	sel.mode = done ? SEL_IDLE : SEL_READY;
}

void
selnormalize(void)
{
	int i;

	if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
		sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
		sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
	} else {
		sel.nb.x = MIN(sel.ob.x, sel.oe.x);
		sel.ne.x = MAX(sel.ob.x, sel.oe.x);
	}
	sel.nb.y = MIN(sel.ob.y, sel.oe.y);
	sel.ne.y = MAX(sel.ob.y, sel.oe.y);

	selsnap(&sel.nb.x, &sel.nb.y, -1);
	selsnap(&sel.ne.x, &sel.ne.y, +1);

	/* expand selection over line breaks */
	if (sel.type == SEL_RECTANGULAR)
		return;
	i = tlinelen(sel.nb.y);
	if (i < sel.nb.x)
		sel.nb.x = i;
	if (tlinelen(sel.ne.y) <= sel.ne.x)
		sel.ne.x = term.col - 1;
}

int
selected(int x, int y)
{
	if (sel.mode == SEL_EMPTY || sel.ob.x == -1 ||
			sel.alt != IS_SET(MODE_ALTSCREEN))
		return 0;

	if (sel.type == SEL_RECTANGULAR)
		return BETWEEN(y, sel.nb.y, sel.ne.y)
		    && BETWEEN(x, sel.nb.x, sel.ne.x);

	return BETWEEN(y, sel.nb.y, sel.ne.y)
	    && (y != sel.nb.y || x >= sel.nb.x)
	    && (y != sel.ne.y || x <= sel.ne.x);
}

void
selsnap(int *x, int *y, int direction)
{
	int newx, newy, xt, yt;
	int delim, prevdelim;
	Glyph *gp, *prevgp;

	switch (sel.snap) {
	case SNAP_WORD:
		/*
		 * Snap around if the word wraps around at the end or
		 * beginning of a line.
		 */
		prevgp = &TLINE(*y)[*x];
		prevdelim = ISDELIM(prevgp->u);
		for (;;) {
			newx = *x + direction;
			newy = *y;
			if (!BETWEEN(newx, 0, term.col - 1)) {
				newy += direction;
				newx = (newx + term.col) % term.col;
				if (!BETWEEN(newy, 0, term.row - 1))
					break;

				if (direction > 0)
					yt = *y, xt = *x;
				else
					yt = newy, xt = newx;
				if (!(TLINE(yt)[xt].mode & ATTR_WRAP))
					break;
			}

			if (newx >= tlinelen(newy))
				break;

			gp = &TLINE(newy)[newx];
			delim = ISDELIM(gp->u);
			if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
					|| (delim && gp->u != prevgp->u)))
				break;

			*x = newx;
			*y = newy;
			prevgp = gp;
			prevdelim = delim;
		}
		break;
	case SNAP_LINE:
		/*
		 * Snap around if the the previous line or the current one
		 * has set ATTR_WRAP at its end. Then the whole next or
		 * previous line will be selected.
		 */
		*x = (direction < 0) ? 0 : term.col - 1;
		if (direction < 0) {
			for (; *y > 0; *y += direction) {
				if (!(TLINE(*y-1)[term.col-1].mode
						& ATTR_WRAP)) {
					break;
				}
			}
		} else if (direction > 0) {
			for (; *y < term.row-1; *y += direction) {
				if (!(TLINE(*y)[term.col-1].mode
						& ATTR_WRAP)) {
					break;
				}
			}
		}
		break;
	}
}

char *
getsel(void)
{
	char *str, *ptr;
	int y, bufsize, lastx, linelen;
	Glyph *gp, *last;

	if (sel.ob.x == -1)
		return NULL;

	bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
	ptr = str = xmalloc(bufsize);

	/* append every set & selected glyph to the selection */
	for (y = sel.nb.y; y <= sel.ne.y; y++) {
		if ((linelen = tlinelen(y)) == 0) {
			*ptr++ = '\n';
			continue;
		}

		if (sel.type == SEL_RECTANGULAR) {
			gp = &TLINE(y)[sel.nb.x];
			lastx = sel.ne.x;
		} else {
			gp = &TLINE(y)[sel.nb.y == y ? sel.nb.x : 0];
			lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
		}
		last = &TLINE(y)[MIN(lastx, linelen-1)];
		while (last >= gp && last->u == ' ')
			--last;

		for ( ; gp <= last; ++gp) {
			if (gp->mode & ATTR_WDUMMY)
				continue;

			ptr += utf8encode(gp->u, ptr);
		}

		/*
		 * Copy and pasting of line endings is inconsistent
		 * in the inconsistent terminal and GUI world.
		 * The best solution seems like to produce '\n' when
		 * something is copied from st and convert '\n' to
		 * '\r', when something to be pasted is received by
		 * st.
		 * FIXME: Fix the computer world.
		 */
		if ((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
			*ptr++ = '\n';
	}
	*ptr = 0;
	return str;
}

void
selclear(void)
{
	if (sel.ob.x == -1)
		return;
	sel.mode = SEL_IDLE;
	sel.ob.x = -1;
	tsetdirt(sel.nb.y, sel.ne.y);
}

void
die(const char *errstr, ...)
{
	va_list ap;

	va_start(ap, errstr);
	vfprintf(stderr, errstr, ap);
	va_end(ap);
	exit(1);
}

void
execsh(char *cmd, char **args)
{
	char *sh, *prog;
	const struct passwd *pw;

	errno = 0;
	if ((pw = getpwuid(getuid())) == NULL) {
		if (errno)
			die("getpwuid: %s\n", strerror(errno));
		else
			die("who are you?\n");
	}

	if ((sh = getenv("SHELL")) == NULL)
		sh = (pw->pw_shell[0]) ? pw->pw_shell : cmd;

	if (args)
		prog = args[0];
	else if (utmp)
		prog = utmp;
	else
		prog = sh;
	DEFAULT(args, ((char *[]) {prog, NULL}));

	unsetenv("COLUMNS");
	unsetenv("LINES");
	unsetenv("TERMCAP");
	setenv("LOGNAME", pw->pw_name, 1);
	setenv("USER", pw->pw_name, 1);
	setenv("SHELL", sh, 1);
	setenv("HOME", pw->pw_dir, 1);
	setenv("TERM", termname, 1);

	signal(SIGCHLD, SIG_DFL);
	signal(SIGHUP, SIG_DFL);
	signal(SIGINT, SIG_DFL);
	signal(SIGQUIT, SIG_DFL);
	signal(SIGTERM, SIG_DFL);
	signal(SIGALRM, SIG_DFL);

	execvp(prog, args);
	_exit(1);
}

void
sigchld(int a)
{
	int stat;
	pid_t p;

	if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
		die("waiting for pid %hd failed: %s\n", pid, strerror(errno));

	if (pid != p)
		return;

	if (WIFEXITED(stat) && WEXITSTATUS(stat))
		die("child exited with status %d\n", WEXITSTATUS(stat));
	else if (WIFSIGNALED(stat))
		die("child terminated due to signal %d\n", WTERMSIG(stat));
	exit(0);
}

void
stty(char **args)
{
	char cmd[_POSIX_ARG_MAX], **p, *q, *s;
	size_t n, siz;

	if ((n = strlen(stty_args)) > sizeof(cmd)-1)
		die("incorrect stty parameters\n");
	memcpy(cmd, stty_args, n);
	q = cmd + n;
	siz = sizeof(cmd) - n;
	for (p = args; p && (s = *p); ++p) {
		if ((n = strlen(s)) > siz-1)
			die("stty parameter length too long\n");
		*q++ = ' ';
		memcpy(q, s, n);
		q += n;
		siz -= n + 1;
	}
	*q = '\0';
	if (system(cmd) != 0)
		perror("Couldn't call stty");
}

int
ttynew(char *line, char *cmd, char *out, char **args)
{
	int m, s;

	if (out) {
		term.mode |= MODE_PRINT;
		iofd = (!strcmp(out, "-")) ?
			  1 : open(out, O_WRONLY | O_CREAT, 0666);
		if (iofd < 0) {
			fprintf(stderr, "Error opening %s:%s\n",
				out, strerror(errno));
		}
	}

	if (line) {
		if ((cmdfd = open(line, O_RDWR)) < 0)
			die("open line '%s' failed: %s\n",
			    line, strerror(errno));
		dup2(cmdfd, 0);
		stty(args);
		return cmdfd;
	}

	/* seems to work fine on linux, openbsd and freebsd */
	if (openpty(&m, &s, NULL, NULL, NULL) < 0)
		die("openpty failed: %s\n", strerror(errno));

	switch (pid = fork()) {
	case -1:
		die("fork failed: %s\n", strerror(errno));
		break;
	case 0:
		close(iofd);
		setsid(); /* create a new process group */
		dup2(s, 0);
		dup2(s, 1);
		dup2(s, 2);
		if (ioctl(s, TIOCSCTTY, NULL) < 0)
			die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
		close(s);
		close(m);
#ifdef __OpenBSD__
		if (pledge("stdio getpw proc exec", NULL) == -1)
			die("pledge\n");
#endif
		execsh(cmd, args);
		break;
	default:
#ifdef __OpenBSD__
		if (pledge("stdio rpath tty proc", NULL) == -1)
			die("pledge\n");
#endif
		close(s);
		cmdfd = m;
		signal(SIGCHLD, sigchld);
		break;
	}
	return cmdfd;
}

size_t
ttyread(void)
{
	static char buf[BUFSIZ];
	static int buflen = 0;
	int written;
	int ret;

	/* append read bytes to unprocessed bytes */
	if ((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
		die("couldn't read from shell: %s\n", strerror(errno));
	buflen += ret;

	written = twrite(buf, buflen, 0);
	buflen -= written;
	/* keep any uncomplete utf8 char for the next call */
	if (buflen > 0)
		memmove(buf, buf + written, buflen);

	return ret;
}

void
ttywrite(const char *s, size_t n, int may_echo)
{
	const char *next;
	Arg arg = (Arg) { .i = term.scr };

	kscrolldown(&arg);

	if (may_echo && IS_SET(MODE_ECHO))
		twrite(s, n, 1);

	if (!IS_SET(MODE_CRLF)) {
		ttywriteraw(s, n);
		return;
	}

	/* This is similar to how the kernel handles ONLCR for ttys */
	while (n > 0) {
		if (*s == '\r') {
			next = s + 1;
			ttywriteraw("\r\n", 2);
		} else {
			next = memchr(s, '\r', n);
			DEFAULT(next, s + n);
			ttywriteraw(s, next - s);
		}
		n -= next - s;
		s = next;
	}
}

void
ttywriteraw(const char *s, size_t n)
{
	fd_set wfd, rfd;
	ssize_t r;
	size_t lim = 256;

	/*
	 * Remember that we are using a pty, which might be a modem line.
	 * Writing too much will clog the line. That's why we are doing this
	 * dance.
	 * FIXME: Migrate the world to Plan 9.
	 */
	while (n > 0) {
		FD_ZERO(&wfd);
		FD_ZERO(&rfd);
		FD_SET(cmdfd, &wfd);
		FD_SET(cmdfd, &rfd);

		/* Check if we can write. */
		if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
			if (errno == EINTR)
				continue;
			die("select failed: %s\n", strerror(errno));
		}
		if (FD_ISSET(cmdfd, &wfd)) {
			/*
			 * Only write the bytes written by ttywrite() or the
			 * default of 256. This seems to be a reasonable value
			 * for a serial line. Bigger values might clog the I/O.
			 */
			if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
				goto write_error;
			if (r < n) {
				/*
				 * We weren't able to write out everything.
				 * This means the buffer is getting full
				 * again. Empty it.
				 */
				if (n < lim)
					lim = ttyread();
				n -= r;
				s += r;
			} else {
				/* All bytes have been written. */
				break;
			}
		}
		if (FD_ISSET(cmdfd, &rfd))
			lim = ttyread();
	}
	return;

write_error:
	die("write error on tty: %s\n", strerror(errno));
}

void
ttyresize(int tw, int th)
{
	struct winsize w;

	w.ws_row = term.row;
	w.ws_col = term.col;
	w.ws_xpixel = tw;
	w.ws_ypixel = th;
	if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
		fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
}

void
ttyhangup()
{
	/* Send SIGHUP to shell */
	kill(pid, SIGHUP);
}

int
tattrset(int attr)
{
	int i, j;

	for (i = 0; i < term.row-1; i++) {
		for (j = 0; j < term.col-1; j++) {
			if (term.line[i][j].mode & attr)
				return 1;
		}
	}

	return 0;
}

void
tsetdirt(int top, int bot)
{
	int i;

	LIMIT(top, 0, term.row-1);
	LIMIT(bot, 0, term.row-1);

	for (i = top; i <= bot; i++)
		term.dirty[i] = 1;
}

void
tsetdirtattr(int attr)
{
	int i, j;

	for (i = 0; i < term.row-1; i++) {
		for (j = 0; j < term.col-1; j++) {
			if (term.line[i][j].mode & attr) {
				tsetdirt(i, i);
				break;
			}
		}
	}
}

void
tfulldirt(void)
{
	tsetdirt(0, term.row-1);
}

void
tcursor(int mode)
{
	static TCursor c[2];
	int alt = IS_SET(MODE_ALTSCREEN);

	if (mode == CURSOR_SAVE) {
		c[alt] = term.c;
	} else if (mode == CURSOR_LOAD) {
		term.c = c[alt];
		tmoveto(c[alt].x, c[alt].y);
	}
}

void
treset(void)
{
	uint i;

	term.c = (TCursor){{
		.mode = ATTR_NULL,
		.fg = defaultfg,
		.bg = defaultbg
	}, .x = 0, .y = 0, .state = CURSOR_DEFAULT};

	memset(term.tabs, 0, term.col * sizeof(*term.tabs));
	for (i = tabspaces; i < term.col; i += tabspaces)
		term.tabs[i] = 1;
	term.top = 0;
	term.bot = term.row - 1;
	term.mode = MODE_WRAP|MODE_UTF8;
	memset(term.trantbl, CS_USA, sizeof(term.trantbl));
	term.charset = 0;

	for (i = 0; i < 2; i++) {
		tmoveto(0, 0);
		tcursor(CURSOR_SAVE);
		tclearregion(0, 0, term.col-1, term.row-1);
		tswapscreen();
	}
}

void
tnew(int col, int row)
{
	term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
	tresize(col, row);
	treset();
}

void
tswapscreen(void)
{
	Line *tmp = term.line;

	term.line = term.alt;
	term.alt = tmp;
	term.mode ^= MODE_ALTSCREEN;
	tfulldirt();
}

void
kscrolldown(const Arg* a)
{
	int n = a->i;

	if (n < 0)
		n = term.row + n;

	if (n > term.scr)
		n = term.scr;

	if (term.scr > 0) {
		term.scr -= n;
		selscroll(0, -n);
		tfulldirt();
	}
}

void
kscrollup(const Arg* a)
{
	int n = a->i;

	if (n < 0)
		n = term.row + n;

	if (term.scr <= HISTSIZE-n) {
		term.scr += n;
		selscroll(0, n);
		tfulldirt();
	}
}

void
tscrolldown(int orig, int n, int copyhist)
{
	int i;
	Line temp;

	LIMIT(n, 0, term.bot-orig+1);

	if (copyhist) {
		term.histi = (term.histi - 1 + HISTSIZE) % HISTSIZE;
		temp = term.hist[term.histi];
		term.hist[term.histi] = term.line[term.bot];
		term.line[term.bot] = temp;
	}

	tsetdirt(orig, term.bot-n);
	tclearregion(0, term.bot-n+1, term.col-1, term.bot);

	for (i = term.bot; i >= orig+n; i--) {
		temp = term.line[i];
		term.line[i] = term.line[i-n];
		term.line[i-n] = temp;
	}

	selscroll(orig, n);
}

void
tscrollup(int orig, int n, int copyhist)
{
	int i;
	Line temp;

	LIMIT(n, 0, term.bot-orig+1);

	if (copyhist) {
		term.histi = (term.histi + 1) % HISTSIZE;
		temp = term.hist[term.histi];
		term.hist[term.histi] = term.line[orig];
		term.line[orig] = temp;
	}

	if (term.scr > 0 && term.scr < HISTSIZE)
		term.scr = MIN(term.scr + n, HISTSIZE-1);

	tclearregion(0, orig, term.col-1, orig+n-1);
	tsetdirt(orig+n, term.bot);

	for (i = orig; i <= term.bot-n; i++) {
		temp = term.line[i];
		term.line[i] = term.line[i+n];
		term.line[i+n] = temp;
	}

	selscroll(orig, -n);
}

void
selscroll(int orig, int n)
{
	if (sel.ob.x == -1)
		return;

	if (BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
		if ((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
			selclear();
			return;
		}
		if (sel.type == SEL_RECTANGULAR) {
			if (sel.ob.y < term.top)
				sel.ob.y = term.top;
			if (sel.oe.y > term.bot)
				sel.oe.y = term.bot;
		} else {
			if (sel.ob.y < term.top) {
				sel.ob.y = term.top;
				sel.ob.x = 0;
			}
			if (sel.oe.y > term.bot) {
				sel.oe.y = term.bot;
				sel.oe.x = term.col;
			}
		}
		selnormalize();
	}
}

void
tnewline(int first_col)
{
	int y = term.c.y;

	if (y == term.bot) {
		tscrollup(term.top, 1, 1);
	} else {
		y++;
	}
	tmoveto(first_col ? 0 : term.c.x, y);
}

void
csiparse(void)
{
	char *p = csiescseq.buf, *np;
	long int v;

	csiescseq.narg = 0;
	if (*p == '?') {
		csiescseq.priv = 1;
		p++;
	}

	csiescseq.buf[csiescseq.len] = '\0';
	while (p < csiescseq.buf+csiescseq.len) {
		np = NULL;
		v = strtol(p, &np, 10);
		if (np == p)
			v = 0;
		if (v == LONG_MAX || v == LONG_MIN)
			v = -1;
		csiescseq.arg[csiescseq.narg++] = v;
		p = np;
		if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
			break;
		p++;
	}
	csiescseq.mode[0] = *p++;
	csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
}

/* for absolute user moves, when decom is set */
void
tmoveato(int x, int y)
{
	tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
}

void
tmoveto(int x, int y)
{
	int miny, maxy;

	if (term.c.state & CURSOR_ORIGIN) {
		miny = term.top;
		maxy = term.bot;
	} else {
		miny = 0;
		maxy = term.row - 1;
	}
	term.c.state &= ~CURSOR_WRAPNEXT;
	term.c.x = LIMIT(x, 0, term.col-1);
	term.c.y = LIMIT(y, miny, maxy);
}

void
tsetchar(Rune u, Glyph *attr, int x, int y)
{
	static char *vt100_0[62] = { /* 0x41 - 0x7e */
		"↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
		0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
		0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
		0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
		"◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
		"␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
		"⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
		"│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
	};

	/*
	 * The table is proudly stolen from rxvt.
	 */
	if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
	   BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
		utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);

	if (term.line[y][x].mode & ATTR_WIDE) {
		if (x+1 < term.col) {
			term.line[y][x+1].u = ' ';
			term.line[y][x+1].mode &= ~ATTR_WDUMMY;
		}
	} else if (term.line[y][x].mode & ATTR_WDUMMY) {
		term.line[y][x-1].u = ' ';
		term.line[y][x-1].mode &= ~ATTR_WIDE;
	}

	term.dirty[y] = 1;
	term.line[y][x] = *attr;
	term.line[y][x].u = u;
}

void
tclearregion(int x1, int y1, int x2, int y2)
{
	int x, y, temp;
	Glyph *gp;

	if (x1 > x2)
		temp = x1, x1 = x2, x2 = temp;
	if (y1 > y2)
		temp = y1, y1 = y2, y2 = temp;

	LIMIT(x1, 0, term.col-1);
	LIMIT(x2, 0, term.col-1);
	LIMIT(y1, 0, term.row-1);
	LIMIT(y2, 0, term.row-1);

	for (y = y1; y <= y2; y++) {
		term.dirty[y] = 1;
		for (x = x1; x <= x2; x++) {
			gp = &term.line[y][x];
			if (selected(x, y))
				selclear();
			gp->fg = term.c.attr.fg;
			gp->bg = term.c.attr.bg;
			gp->mode = 0;
			gp->u = ' ';
		}
	}
}

void
tdeletechar(int n)
{
	int dst, src, size;
	Glyph *line;

	LIMIT(n, 0, term.col - term.c.x);

	dst = term.c.x;
	src = term.c.x + n;
	size = term.col - src;
	line = term.line[term.c.y];

	memmove(&line[dst], &line[src], size * sizeof(Glyph));
	tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
}

void
tinsertblank(int n)
{
	int dst, src, size;
	Glyph *line;

	LIMIT(n, 0, term.col - term.c.x);

	dst = term.c.x + n;
	src = term.c.x;
	size = term.col - dst;
	line = term.line[term.c.y];

	memmove(&line[dst], &line[src], size * sizeof(Glyph));
	tclearregion(src, term.c.y, dst - 1, term.c.y);
}

void
tinsertblankline(int n)
{
	if (BETWEEN(term.c.y, term.top, term.bot))
		tscrolldown(term.c.y, n, 0);
}

void
tdeleteline(int n)
{
	if (BETWEEN(term.c.y, term.top, term.bot))
		tscrollup(term.c.y, n, 0);
}

int32_t
tdefcolor(int *attr, int *npar, int l)
{
	int32_t idx = -1;
	uint r, g, b;

	switch (attr[*npar + 1]) {
	case 2: /* direct color in RGB space */
		if (*npar + 4 >= l) {
			fprintf(stderr,
				"erresc(38): Incorrect number of parameters (%d)\n",
				*npar);
			break;
		}
		r = attr[*npar + 2];
		g = attr[*npar + 3];
		b = attr[*npar + 4];
		*npar += 4;
		if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
			fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
				r, g, b);
		else
			idx = TRUECOLOR(r, g, b);
		break;
	case 5: /* indexed color */
		if (*npar + 2 >= l) {
			fprintf(stderr,
				"erresc(38): Incorrect number of parameters (%d)\n",
				*npar);
			break;
		}
		*npar += 2;
		if (!BETWEEN(attr[*npar], 0, 255))
			fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
		else
			idx = attr[*npar];
		break;
	case 0: /* implemented defined (only foreground) */
	case 1: /* transparent */
	case 3: /* direct color in CMY space */
	case 4: /* direct color in CMYK space */
	default:
		fprintf(stderr,
		        "erresc(38): gfx attr %d unknown\n", attr[*npar]);
		break;
	}

	return idx;
}

void
tsetattr(int *attr, int l)
{
	int i;
	int32_t idx;

	for (i = 0; i < l; i++) {
		switch (attr[i]) {
		case 0:
			term.c.attr.mode &= ~(
				ATTR_BOLD       |
				ATTR_FAINT      |
				ATTR_ITALIC     |
				ATTR_UNDERLINE  |
				ATTR_BLINK      |
				ATTR_REVERSE    |
				ATTR_INVISIBLE  |
				ATTR_STRUCK     );
			term.c.attr.fg = defaultfg;
			term.c.attr.bg = defaultbg;
			break;
		case 1:
			term.c.attr.mode |= ATTR_BOLD;
			break;
		case 2:
			term.c.attr.mode |= ATTR_FAINT;
			break;
		case 3:
			term.c.attr.mode |= ATTR_ITALIC;
			break;
		case 4:
			term.c.attr.mode |= ATTR_UNDERLINE;
			break;
		case 5: /* slow blink */
			/* FALLTHROUGH */
		case 6: /* rapid blink */
			term.c.attr.mode |= ATTR_BLINK;
			break;
		case 7:
			term.c.attr.mode |= ATTR_REVERSE;
			break;
		case 8:
			term.c.attr.mode |= ATTR_INVISIBLE;
			break;
		case 9:
			term.c.attr.mode |= ATTR_STRUCK;
			break;
		case 22:
			term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
			break;
		case 23:
			term.c.attr.mode &= ~ATTR_ITALIC;
			break;
		case 24:
			term.c.attr.mode &= ~ATTR_UNDERLINE;
			break;
		case 25:
			term.c.attr.mode &= ~ATTR_BLINK;
			break;
		case 27:
			term.c.attr.mode &= ~ATTR_REVERSE;
			break;
		case 28:
			term.c.attr.mode &= ~ATTR_INVISIBLE;
			break;
		case 29:
			term.c.attr.mode &= ~ATTR_STRUCK;
			break;
		case 38:
			if ((idx = tdefcolor(attr, &i, l)) >= 0)
				term.c.attr.fg = idx;
			break;
		case 39:
			term.c.attr.fg = defaultfg;
			break;
		case 48:
			if ((idx = tdefcolor(attr, &i, l)) >= 0)
				term.c.attr.bg = idx;
			break;
		case 49:
			term.c.attr.bg = defaultbg;
			break;
		default:
			if (BETWEEN(attr[i], 30, 37)) {
				term.c.attr.fg = attr[i] - 30;
			} else if (BETWEEN(attr[i], 40, 47)) {
				term.c.attr.bg = attr[i] - 40;
			} else if (BETWEEN(attr[i], 90, 97)) {
				term.c.attr.fg = attr[i] - 90 + 8;
			} else if (BETWEEN(attr[i], 100, 107)) {
				term.c.attr.bg = attr[i] - 100 + 8;
			} else {
				fprintf(stderr,
					"erresc(default): gfx attr %d unknown\n",
					attr[i]);
				csidump();
			}
			break;
		}
	}
}

void
tsetscroll(int t, int b)
{
	int temp;

	LIMIT(t, 0, term.row-1);
	LIMIT(b, 0, term.row-1);
	if (t > b) {
		temp = t;
		t = b;
		b = temp;
	}
	term.top = t;
	term.bot = b;
}

void
tsetmode(int priv, int set, int *args, int narg)
{
	int alt, *lim;

	for (lim = args + narg; args < lim; ++args) {
		if (priv) {
			switch (*args) {
			case 1: /* DECCKM -- Cursor key */
				xsetmode(set, MODE_APPCURSOR);
				break;
			case 5: /* DECSCNM -- Reverse video */
				xsetmode(set, MODE_REVERSE);
				break;
			case 6: /* DECOM -- Origin */
				MODBIT(term.c.state, set, CURSOR_ORIGIN);
				tmoveato(0, 0);
				break;
			case 7: /* DECAWM -- Auto wrap */
				MODBIT(term.mode, set, MODE_WRAP);
				break;
			case 0:  /* Error (IGNORED) */
			case 2:  /* DECANM -- ANSI/VT52 (IGNORED) */
			case 3:  /* DECCOLM -- Column  (IGNORED) */
			case 4:  /* DECSCLM -- Scroll (IGNORED) */
			case 8:  /* DECARM -- Auto repeat (IGNORED) */
			case 18: /* DECPFF -- Printer feed (IGNORED) */
			case 19: /* DECPEX -- Printer extent (IGNORED) */
			case 42: /* DECNRCM -- National characters (IGNORED) */
			case 12: /* att610 -- Start blinking cursor (IGNORED) */
				break;
			case 25: /* DECTCEM -- Text Cursor Enable Mode */
				xsetmode(!set, MODE_HIDE);
				break;
			case 9:    /* X10 mouse compatibility mode */
				xsetpointermotion(0);
				xsetmode(0, MODE_MOUSE);
				xsetmode(set, MODE_MOUSEX10);
				break;
			case 1000: /* 1000: report button press */
				xsetpointermotion(0);
				xsetmode(0, MODE_MOUSE);
				xsetmode(set, MODE_MOUSEBTN);
				break;
			case 1002: /* 1002: report motion on button press */
				xsetpointermotion(0);
				xsetmode(0, MODE_MOUSE);
				xsetmode(set, MODE_MOUSEMOTION);
				break;
			case 1003: /* 1003: enable all mouse motions */
				xsetpointermotion(set);
				xsetmode(0, MODE_MOUSE);
				xsetmode(set, MODE_MOUSEMANY);
				break;
			case 1004: /* 1004: send focus events to tty */
				xsetmode(set, MODE_FOCUS);
				break;
			case 1006: /* 1006: extended reporting mode */
				xsetmode(set, MODE_MOUSESGR);
				break;
			case 1034:
				xsetmode(set, MODE_8BIT);
				break;
			case 1049: /* swap screen & set/restore cursor as xterm */
				if (!allowaltscreen)
					break;
				tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
				/* FALLTHROUGH */
			case 47: /* swap screen */
			case 1047:
				if (!allowaltscreen)
					break;
				alt = IS_SET(MODE_ALTSCREEN);
				if (alt) {
					tclearregion(0, 0, term.col-1,
							term.row-1);
				}
				if (set ^ alt) /* set is always 1 or 0 */
					tswapscreen();
				if (*args != 1049)
					break;
				/* FALLTHROUGH */
			case 1048:
				tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
				break;
			case 2004: /* 2004: bracketed paste mode */
				xsetmode(set, MODE_BRCKTPASTE);
				break;
			/* Not implemented mouse modes. See comments there. */
			case 1001: /* mouse highlight mode; can hang the
				      terminal by design when implemented. */
			case 1005: /* UTF-8 mouse mode; will confuse
				      applications not supporting UTF-8
				      and luit. */
			case 1015: /* urxvt mangled mouse mode; incompatible
				      and can be mistaken for other control
				      codes. */
			default:
				fprintf(stderr,
					"erresc: unknown private set/reset mode %d\n",
					*args);
				break;
			}
		} else {
			switch (*args) {
			case 0:  /* Error (IGNORED) */
				break;
			case 2:
				xsetmode(set, MODE_KBDLOCK);
				break;
			case 4:  /* IRM -- Insertion-replacement */
				MODBIT(term.mode, set, MODE_INSERT);
				break;
			case 12: /* SRM -- Send/Receive */
				MODBIT(term.mode, !set, MODE_ECHO);
				break;
			case 20: /* LNM -- Linefeed/new line */
				MODBIT(term.mode, set, MODE_CRLF);
				break;
			default:
				fprintf(stderr,
					"erresc: unknown set/reset mode %d\n",
					*args);
				break;
			}
		}
	}
}

void
tsetcolor( int row, int start, int end, uint32_t fg, uint32_t bg )
{
	int i = start;
	for( ; i < end; ++i )
	{
		term.line[row][i].fg = fg;
		term.line[row][i].bg = bg;
	}
}

void
csihandle(void)
{
	char buf[40];
	int len;

	switch (csiescseq.mode[0]) {
	default:
	unknown:
		fprintf(stderr, "erresc: unknown csi ");
		csidump();
		/* die(""); */
		break;
	case '@': /* ICH -- Insert <n> blank char */
		DEFAULT(csiescseq.arg[0], 1);
		tinsertblank(csiescseq.arg[0]);
		break;
	case 'A': /* CUU -- Cursor <n> Up */
		DEFAULT(csiescseq.arg[0], 1);
		tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
		break;
	case 'B': /* CUD -- Cursor <n> Down */
	case 'e': /* VPR --Cursor <n> Down */
		DEFAULT(csiescseq.arg[0], 1);
		tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
		break;
	case 'i': /* MC -- Media Copy */
		switch (csiescseq.arg[0]) {
		case 0:
			tdump();
			break;
		case 1:
			tdumpline(term.c.y);
			break;
		case 2:
			tdumpsel();
			break;
		case 4:
			term.mode &= ~MODE_PRINT;
			break;
		case 5:
			term.mode |= MODE_PRINT;
			break;
		}
		break;
	case 'c': /* DA -- Device Attributes */
		if (csiescseq.arg[0] == 0)
			ttywrite(vtiden, strlen(vtiden), 0);
		break;
	case 'C': /* CUF -- Cursor <n> Forward */
	case 'a': /* HPR -- Cursor <n> Forward */
		DEFAULT(csiescseq.arg[0], 1);
		tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
		break;
	case 'D': /* CUB -- Cursor <n> Backward */
		DEFAULT(csiescseq.arg[0], 1);
		tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
		break;
	case 'E': /* CNL -- Cursor <n> Down and first col */
		DEFAULT(csiescseq.arg[0], 1);
		tmoveto(0, term.c.y+csiescseq.arg[0]);
		break;
	case 'F': /* CPL -- Cursor <n> Up and first col */
		DEFAULT(csiescseq.arg[0], 1);
		tmoveto(0, term.c.y-csiescseq.arg[0]);
		break;
	case 'g': /* TBC -- Tabulation clear */
		switch (csiescseq.arg[0]) {
		case 0: /* clear current tab stop */
			term.tabs[term.c.x] = 0;
			break;
		case 3: /* clear all the tabs */
			memset(term.tabs, 0, term.col * sizeof(*term.tabs));
			break;
		default:
			goto unknown;
		}
		break;
	case 'G': /* CHA -- Move to <col> */
	case '`': /* HPA */
		DEFAULT(csiescseq.arg[0], 1);
		tmoveto(csiescseq.arg[0]-1, term.c.y);
		break;
	case 'H': /* CUP -- Move to <row> <col> */
	case 'f': /* HVP */
		DEFAULT(csiescseq.arg[0], 1);
		DEFAULT(csiescseq.arg[1], 1);
		tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
		break;
	case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
		DEFAULT(csiescseq.arg[0], 1);
		tputtab(csiescseq.arg[0]);
		break;
	case 'J': /* ED -- Clear screen */
		switch (csiescseq.arg[0]) {
		case 0: /* below */
			tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
			if (term.c.y < term.row-1) {
				tclearregion(0, term.c.y+1, term.col-1,
						term.row-1);
			}
			break;
		case 1: /* above */
			if (term.c.y > 1)
				tclearregion(0, 0, term.col-1, term.c.y-1);
			tclearregion(0, term.c.y, term.c.x, term.c.y);
			break;
		case 2: /* all */
			tclearregion(0, 0, term.col-1, term.row-1);
			break;
		default:
			goto unknown;
		}
		break;
	case 'K': /* EL -- Clear line */
		switch (csiescseq.arg[0]) {
		case 0: /* right */
			tclearregion(term.c.x, term.c.y, term.col-1,
					term.c.y);
			break;
		case 1: /* left */
			tclearregion(0, term.c.y, term.c.x, term.c.y);
			break;
		case 2: /* all */
			tclearregion(0, term.c.y, term.col-1, term.c.y);
			break;
		}
		break;
	case 'S': /* SU -- Scroll <n> line up */
		DEFAULT(csiescseq.arg[0], 1);
		tscrollup(term.top, csiescseq.arg[0], 0);
		break;
	case 'T': /* SD -- Scroll <n> line down */
		DEFAULT(csiescseq.arg[0], 1);
		tscrolldown(term.top, csiescseq.arg[0], 0);
		break;
	case 'L': /* IL -- Insert <n> blank lines */
		DEFAULT(csiescseq.arg[0], 1);
		tinsertblankline(csiescseq.arg[0]);
		break;
	case 'l': /* RM -- Reset Mode */
		tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
		break;
	case 'M': /* DL -- Delete <n> lines */
		DEFAULT(csiescseq.arg[0], 1);
		tdeleteline(csiescseq.arg[0]);
		break;
	case 'X': /* ECH -- Erase <n> char */
		DEFAULT(csiescseq.arg[0], 1);
		tclearregion(term.c.x, term.c.y,
				term.c.x + csiescseq.arg[0] - 1, term.c.y);
		break;
	case 'P': /* DCH -- Delete <n> char */
		DEFAULT(csiescseq.arg[0], 1);
		tdeletechar(csiescseq.arg[0]);
		break;
	case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
		DEFAULT(csiescseq.arg[0], 1);
		tputtab(-csiescseq.arg[0]);
		break;
	case 'd': /* VPA -- Move to <row> */
		DEFAULT(csiescseq.arg[0], 1);
		tmoveato(term.c.x, csiescseq.arg[0]-1);
		break;
	case 'h': /* SM -- Set terminal mode */
		tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
		break;
	case 'm': /* SGR -- Terminal attribute (color) */
		tsetattr(csiescseq.arg, csiescseq.narg);
		break;
	case 'n': /* DSR – Device Status Report (cursor position) */
		if (csiescseq.arg[0] == 6) {
			len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
					term.c.y+1, term.c.x+1);
			ttywrite(buf, len, 0);
		}
		break;
	case 'r': /* DECSTBM -- Set Scrolling Region */
		if (csiescseq.priv) {
			goto unknown;
		} else {
			DEFAULT(csiescseq.arg[0], 1);
			DEFAULT(csiescseq.arg[1], term.row);
			tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
			tmoveato(0, 0);
		}
		break;
	case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
		tcursor(CURSOR_SAVE);
		break;
	case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
		tcursor(CURSOR_LOAD);
		break;
	case ' ':
		switch (csiescseq.mode[1]) {
		case 'q': /* DECSCUSR -- Set Cursor Style */
			if (xsetcursor(csiescseq.arg[0]))
				goto unknown;
			break;
		default:
			goto unknown;
		}
		break;
	}
}

void
csidump(void)
{
	int i;
	uint c;

	fprintf(stderr, "ESC[");
	for (i = 0; i < csiescseq.len; i++) {
		c = csiescseq.buf[i] & 0xff;
		if (isprint(c)) {
			putc(c, stderr);
		} else if (c == '\n') {
			fprintf(stderr, "(\\n)");
		} else if (c == '\r') {
			fprintf(stderr, "(\\r)");
		} else if (c == 0x1b) {
			fprintf(stderr, "(\\e)");
		} else {
			fprintf(stderr, "(%02x)", c);
		}
	}
	putc('\n', stderr);
}

void
csireset(void)
{
	memset(&csiescseq, 0, sizeof(csiescseq));
}

void
strhandle(void)
{
	char *p = NULL;
	int j, narg, par;

	term.esc &= ~(ESC_STR_END|ESC_STR);
	strparse();
	par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;

	switch (strescseq.type) {
	case ']': /* OSC -- Operating System Command */
		switch (par) {
		case 0:
		case 1:
		case 2:
			if (narg > 1)
				xsettitle(strescseq.args[1]);
			return;
		case 52:
			if (narg > 2) {
				char *dec;

				dec = base64dec(strescseq.args[2]);
				if (dec) {
					xsetsel(dec);
					xclipcopy();
				} else {
					fprintf(stderr, "erresc: invalid base64\n");
				}
			}
			return;
		case 4: /* color set */
			if (narg < 3)
				break;
			p = strescseq.args[2];
			/* FALLTHROUGH */
		case 104: /* color reset, here p = NULL */
			j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
			if (xsetcolorname(j, p)) {
				fprintf(stderr, "erresc: invalid color %s\n", p);
			} else {
				/*
				 * TODO if defaultbg color is changed, borders
				 * are dirty
				 */
				redraw();
			}
			return;
		}
		break;
	case 'k': /* old title set compatibility */
		xsettitle(strescseq.args[0]);
		return;
	case 'P': /* DCS -- Device Control String */
		term.mode |= ESC_DCS;
	case '_': /* APC -- Application Program Command */
	case '^': /* PM -- Privacy Message */
		return;
	}

	fprintf(stderr, "erresc: unknown str ");
	strdump();
}

void
strparse(void)
{
	int c;
	char *p = strescseq.buf;

	strescseq.narg = 0;
	strescseq.buf[strescseq.len] = '\0';

	if (*p == '\0')
		return;

	while (strescseq.narg < STR_ARG_SIZ) {
		strescseq.args[strescseq.narg++] = p;
		while ((c = *p) != ';' && c != '\0')
			++p;
		if (c == '\0')
			return;
		*p++ = '\0';
	}
}

void
strdump(void)
{
	int i;
	uint c;

	fprintf(stderr, "ESC%c", strescseq.type);
	for (i = 0; i < strescseq.len; i++) {
		c = strescseq.buf[i] & 0xff;
		if (c == '\0') {
			putc('\n', stderr);
			return;
		} else if (isprint(c)) {
			putc(c, stderr);
		} else if (c == '\n') {
			fprintf(stderr, "(\\n)");
		} else if (c == '\r') {
			fprintf(stderr, "(\\r)");
		} else if (c == 0x1b) {
			fprintf(stderr, "(\\e)");
		} else {
			fprintf(stderr, "(%02x)", c);
		}
	}
	fprintf(stderr, "ESC\\\n");
}

void
strreset(void)
{
	memset(&strescseq, 0, sizeof(strescseq));
}

void
sendbreak(const Arg *arg)
{
	if (tcsendbreak(cmdfd, 0))
		perror("Error sending break");
}

void
tprinter(char *s, size_t len)
{
	if (iofd != -1 && xwrite(iofd, s, len) < 0) {
		perror("Error writing to output file");
		close(iofd);
		iofd = -1;
	}
}

void
toggleprinter(const Arg *arg)
{
	term.mode ^= MODE_PRINT;
}

void
printscreen(const Arg *arg)
{
	tdump();
}

void
printsel(const Arg *arg)
{
	tdumpsel();
}

void
tdumpsel(void)
{
	char *ptr;

	if ((ptr = getsel())) {
		tprinter(ptr, strlen(ptr));
		free(ptr);
	}
}

void
tdumpline(int n)
{
	char buf[UTF_SIZ];
	Glyph *bp, *end;

	bp = &term.line[n][0];
	end = &bp[MIN(tlinelen(n), term.col) - 1];
	if (bp != end || bp->u != ' ') {
		for ( ;bp <= end; ++bp)
			tprinter(buf, utf8encode(bp->u, buf));
	}
	tprinter("\n", 1);
}

void
tdump(void)
{
	int i;

	for (i = 0; i < term.row; ++i)
		tdumpline(i);
}

void
tputtab(int n)
{
	uint x = term.c.x;

	if (n > 0) {
		while (x < term.col && n--)
			for (++x; x < term.col && !term.tabs[x]; ++x)
				/* nothing */ ;
	} else if (n < 0) {
		while (x > 0 && n++)
			for (--x; x > 0 && !term.tabs[x]; --x)
				/* nothing */ ;
	}
	term.c.x = LIMIT(x, 0, term.col-1);
}

void
tdefutf8(char ascii)
{
	if (ascii == 'G')
		term.mode |= MODE_UTF8;
	else if (ascii == '@')
		term.mode &= ~MODE_UTF8;
}

void
tdeftran(char ascii)
{
	static char cs[] = "0B";
	static int vcs[] = {CS_GRAPHIC0, CS_USA};
	char *p;

	if ((p = strchr(cs, ascii)) == NULL) {
		fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
	} else {
		term.trantbl[term.icharset] = vcs[p - cs];
	}
}

void
tdectest(char c)
{
	int x, y;

	if (c == '8') { /* DEC screen alignment test. */
		for (x = 0; x < term.col; ++x) {
			for (y = 0; y < term.row; ++y)
				tsetchar('E', &term.c.attr, x, y);
		}
	}
}

void
tstrsequence(uchar c)
{
	strreset();

	switch (c) {
	case 0x90:   /* DCS -- Device Control String */
		c = 'P';
		term.esc |= ESC_DCS;
		break;
	case 0x9f:   /* APC -- Application Program Command */
		c = '_';
		break;
	case 0x9e:   /* PM -- Privacy Message */
		c = '^';
		break;
	case 0x9d:   /* OSC -- Operating System Command */
		c = ']';
		break;
	}
	strescseq.type = c;
	term.esc |= ESC_STR;
}

void
tcontrolcode(uchar ascii)
{
	switch (ascii) {
	case '\t':   /* HT */
		tputtab(1);
		return;
	case '\b':   /* BS */
		tmoveto(term.c.x-1, term.c.y);
		return;
	case '\r':   /* CR */
		tmoveto(0, term.c.y);
		return;
	case '\f':   /* LF */
	case '\v':   /* VT */
	case '\n':   /* LF */
		/* go to first col if the mode is set */
		tnewline(IS_SET(MODE_CRLF));
		return;
	case '\a':   /* BEL */
		if (term.esc & ESC_STR_END) {
			/* backwards compatibility to xterm */
			strhandle();
		} else {
			xbell();
		}
		break;
	case '\033': /* ESC */
		csireset();
		term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
		term.esc |= ESC_START;
		return;
	case '\016': /* SO (LS1 -- Locking shift 1) */
	case '\017': /* SI (LS0 -- Locking shift 0) */
		term.charset = 1 - (ascii - '\016');
		return;
	case '\032': /* SUB */
		tsetchar('?', &term.c.attr, term.c.x, term.c.y);
	case '\030': /* CAN */
		csireset();
		break;
	case '\005': /* ENQ (IGNORED) */
	case '\000': /* NUL (IGNORED) */
	case '\021': /* XON (IGNORED) */
	case '\023': /* XOFF (IGNORED) */
	case 0177:   /* DEL (IGNORED) */
		return;
	case 0x80:   /* TODO: PAD */
	case 0x81:   /* TODO: HOP */
	case 0x82:   /* TODO: BPH */
	case 0x83:   /* TODO: NBH */
	case 0x84:   /* TODO: IND */
		break;
	case 0x85:   /* NEL -- Next line */
		tnewline(1); /* always go to first col */
		break;
	case 0x86:   /* TODO: SSA */
	case 0x87:   /* TODO: ESA */
		break;
	case 0x88:   /* HTS -- Horizontal tab stop */
		term.tabs[term.c.x] = 1;
		break;
	case 0x89:   /* TODO: HTJ */
	case 0x8a:   /* TODO: VTS */
	case 0x8b:   /* TODO: PLD */
	case 0x8c:   /* TODO: PLU */
	case 0x8d:   /* TODO: RI */
	case 0x8e:   /* TODO: SS2 */
	case 0x8f:   /* TODO: SS3 */
	case 0x91:   /* TODO: PU1 */
	case 0x92:   /* TODO: PU2 */
	case 0x93:   /* TODO: STS */
	case 0x94:   /* TODO: CCH */
	case 0x95:   /* TODO: MW */
	case 0x96:   /* TODO: SPA */
	case 0x97:   /* TODO: EPA */
	case 0x98:   /* TODO: SOS */
	case 0x99:   /* TODO: SGCI */
		break;
	case 0x9a:   /* DECID -- Identify Terminal */
		ttywrite(vtiden, strlen(vtiden), 0);
		break;
	case 0x9b:   /* TODO: CSI */
	case 0x9c:   /* TODO: ST */
		break;
	case 0x90:   /* DCS -- Device Control String */
	case 0x9d:   /* OSC -- Operating System Command */
	case 0x9e:   /* PM -- Privacy Message */
	case 0x9f:   /* APC -- Application Program Command */
		tstrsequence(ascii);
		return;
	}
	/* only CAN, SUB, \a and C1 chars interrupt a sequence */
	term.esc &= ~(ESC_STR_END|ESC_STR);
}

/*
 * returns 1 when the sequence is finished and it hasn't to read
 * more characters for this sequence, otherwise 0
 */
int
eschandle(uchar ascii)
{
	switch (ascii) {
	case '[':
		term.esc |= ESC_CSI;
		return 0;
	case '#':
		term.esc |= ESC_TEST;
		return 0;
	case '%':
		term.esc |= ESC_UTF8;
		return 0;
	case 'P': /* DCS -- Device Control String */
	case '_': /* APC -- Application Program Command */
	case '^': /* PM -- Privacy Message */
	case ']': /* OSC -- Operating System Command */
	case 'k': /* old title set compatibility */
		tstrsequence(ascii);
		return 0;
	case 'n': /* LS2 -- Locking shift 2 */
	case 'o': /* LS3 -- Locking shift 3 */
		term.charset = 2 + (ascii - 'n');
		break;
	case '(': /* GZD4 -- set primary charset G0 */
	case ')': /* G1D4 -- set secondary charset G1 */
	case '*': /* G2D4 -- set tertiary charset G2 */
	case '+': /* G3D4 -- set quaternary charset G3 */
		term.icharset = ascii - '(';
		term.esc |= ESC_ALTCHARSET;
		return 0;
	case 'D': /* IND -- Linefeed */
		if (term.c.y == term.bot) {
			tscrollup(term.top, 1, 1);
		} else {
			tmoveto(term.c.x, term.c.y+1);
		}
		break;
	case 'E': /* NEL -- Next line */
		tnewline(1); /* always go to first col */
		break;
	case 'H': /* HTS -- Horizontal tab stop */
		term.tabs[term.c.x] = 1;
		break;
	case 'M': /* RI -- Reverse index */
		if (term.c.y == term.top) {
			tscrolldown(term.top, 1, 1);
		} else {
			tmoveto(term.c.x, term.c.y-1);
		}
		break;
	case 'Z': /* DECID -- Identify Terminal */
		ttywrite(vtiden, strlen(vtiden), 0);
		break;
	case 'c': /* RIS -- Reset to initial state */
		treset();
		resettitle();
		xloadcols();
		break;
	case '=': /* DECPAM -- Application keypad */
		xsetmode(1, MODE_APPKEYPAD);
		break;
	case '>': /* DECPNM -- Normal keypad */
		xsetmode(0, MODE_APPKEYPAD);
		break;
	case '7': /* DECSC -- Save Cursor */
		tcursor(CURSOR_SAVE);
		break;
	case '8': /* DECRC -- Restore Cursor */
		tcursor(CURSOR_LOAD);
		break;
	case '\\': /* ST -- String Terminator */
		if (term.esc & ESC_STR_END)
			strhandle();
		break;
	default:
		fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
			(uchar) ascii, isprint(ascii)? ascii:'.');
		break;
	}
	return 1;
}

void
tputc(Rune u)
{
	char c[UTF_SIZ];
	int control;
	int width, len;
	Glyph *gp;

	control = ISCONTROL(u);
	if (!IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
		c[0] = u;
		width = len = 1;
	} else {
		len = utf8encode(u, c);
		if (!control && (width = wcwidth(u)) == -1) {
			memcpy(c, "\357\277\275", 4); /* UTF_INVALID */
			width = 1;
		}
	}

	if (IS_SET(MODE_PRINT))
		tprinter(c, len);

	/*
	 * STR sequence must be checked before anything else
	 * because it uses all following characters until it
	 * receives a ESC, a SUB, a ST or any other C1 control
	 * character.
	 */
	if (term.esc & ESC_STR) {
		if (u == '\a' || u == 030 || u == 032 || u == 033 ||
		   ISCONTROLC1(u)) {
			term.esc &= ~(ESC_START|ESC_STR|ESC_DCS);
			if (IS_SET(MODE_SIXEL)) {
				/* TODO: render sixel */;
				term.mode &= ~MODE_SIXEL;
				return;
			}
			term.esc |= ESC_STR_END;
			goto check_control_code;
		}


		if (IS_SET(MODE_SIXEL)) {
			/* TODO: implement sixel mode */
			return;
		}
		if (term.esc&ESC_DCS && strescseq.len == 0 && u == 'q')
			term.mode |= MODE_SIXEL;

		if (strescseq.len+len >= sizeof(strescseq.buf)-1) {
			/*
			 * Here is a bug in terminals. If the user never sends
			 * some code to stop the str or esc command, then st
			 * will stop responding. But this is better than
			 * silently failing with unknown characters. At least
			 * then users will report back.
			 *
			 * In the case users ever get fixed, here is the code:
			 */
			/*
			 * term.esc = 0;
			 * strhandle();
			 */
			return;
		}

		memmove(&strescseq.buf[strescseq.len], c, len);
		strescseq.len += len;
		return;
	}

check_control_code:
	/*
	 * Actions of control codes must be performed as soon they arrive
	 * because they can be embedded inside a control sequence, and
	 * they must not cause conflicts with sequences.
	 */
	if (control) {
		tcontrolcode(u);
		/*
		 * control codes are not shown ever
		 */
		return;
	} else if (term.esc & ESC_START) {
		if (term.esc & ESC_CSI) {
			csiescseq.buf[csiescseq.len++] = u;
			if (BETWEEN(u, 0x40, 0x7E)
					|| csiescseq.len >= \
					sizeof(csiescseq.buf)-1) {
				term.esc = 0;
				csiparse();
				csihandle();
			}
			return;
		} else if (term.esc & ESC_UTF8) {
			tdefutf8(u);
		} else if (term.esc & ESC_ALTCHARSET) {
			tdeftran(u);
		} else if (term.esc & ESC_TEST) {
			tdectest(u);
		} else {
			if (!eschandle(u))
				return;
			/* sequence already finished */
		}
		term.esc = 0;
		/*
		 * All characters which form part of a sequence are not
		 * printed
		 */
		return;
	}
	if (sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
		selclear();

	gp = &term.line[term.c.y][term.c.x];
	if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
		gp->mode |= ATTR_WRAP;
		tnewline(1);
		gp = &term.line[term.c.y][term.c.x];
	}

	if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
		memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));

	if (term.c.x+width > term.col) {
		tnewline(1);
		gp = &term.line[term.c.y][term.c.x];
	}

	tsetchar(u, &term.c.attr, term.c.x, term.c.y);

	if (width == 2) {
		gp->mode |= ATTR_WIDE;
		if (term.c.x+1 < term.col) {
			gp[1].u = '\0';
			gp[1].mode = ATTR_WDUMMY;
		}
	}
	if (term.c.x+width < term.col) {
		tmoveto(term.c.x+width, term.c.y);
	} else {
		term.c.state |= CURSOR_WRAPNEXT;
	}
}

int
twrite(const char *buf, int buflen, int show_ctrl)
{
	int charsize;
	Rune u;
	int n;

	for (n = 0; n < buflen; n += charsize) {
		if (IS_SET(MODE_UTF8) && !IS_SET(MODE_SIXEL)) {
			/* process a complete utf8 char */
			charsize = utf8decode(buf + n, &u, buflen - n);
			if (charsize == 0)
				break;
		} else {
			u = buf[n] & 0xFF;
			charsize = 1;
		}
		if (show_ctrl && ISCONTROL(u)) {
			if (u & 0x80) {
				u &= 0x7f;
				tputc('^');
				tputc('[');
			} else if (u != '\n' && u != '\r' && u != '\t') {
				u ^= 0x40;
				tputc('^');
			}
		}
		tputc(u);
	}
	return n;
}

void
tresize(int col, int row)
{
	int i, j;
	int minrow = MIN(row, term.row);
	int mincol = MIN(col, term.col);
	int *bp;
	TCursor c;

	if (col < 1 || row < 1) {
		fprintf(stderr,
		        "tresize: error resizing to %dx%d\n", col, row);
		return;
	}

	/*
	 * slide screen to keep cursor where we expect it -
	 * tscrollup would work here, but we can optimize to
	 * memmove because we're freeing the earlier lines
	 */
	for (i = 0; i <= term.c.y - row; i++) {
		free(term.line[i]);
		free(term.alt[i]);
	}
	/* ensure that both src and dst are not NULL */
	if (i > 0) {
		memmove(term.line, term.line + i, row * sizeof(Line));
		memmove(term.alt, term.alt + i, row * sizeof(Line));
	}
	for (i += row; i < term.row; i++) {
		free(term.line[i]);
		free(term.alt[i]);
	}

	/* resize to new height */
	term.line = xrealloc(term.line, row * sizeof(Line));
	term.alt  = xrealloc(term.alt,  row * sizeof(Line));
	term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
	term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));

	for (i = 0; i < HISTSIZE; i++) {
		term.hist[i] = xrealloc(term.hist[i], col * sizeof(Glyph));
		for (j = mincol; j < col; j++) {
			term.hist[i][j] = term.c.attr;
			term.hist[i][j].u = ' ';
		}
	}

	/* resize each row to new width, zero-pad if needed */
	for (i = 0; i < minrow; i++) {
		term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
		term.alt[i]  = xrealloc(term.alt[i],  col * sizeof(Glyph));
	}

	/* allocate any new rows */
	for (/* i = minrow */; i < row; i++) {
		term.line[i] = xmalloc(col * sizeof(Glyph));
		term.alt[i] = xmalloc(col * sizeof(Glyph));
	}
	if (col > term.col) {
		bp = term.tabs + term.col;

		memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
		while (--bp > term.tabs && !*bp)
			/* nothing */ ;
		for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
			*bp = 1;
	}
	/* update terminal size */
	term.col = col;
	term.row = row;
	/* reset scrolling region */
	tsetscroll(0, row-1);
	/* make use of the LIMIT in tmoveto */
	tmoveto(term.c.x, term.c.y);
	/* Clearing both screens (it makes dirty all lines) */
	c = term.c;
	for (i = 0; i < 2; i++) {
		if (mincol < col && 0 < minrow) {
			tclearregion(mincol, 0, col - 1, minrow - 1);
		}
		if (0 < col && minrow < row) {
			tclearregion(0, minrow, col - 1, row - 1);
		}
		tswapscreen();
		tcursor(CURSOR_LOAD);
	}
	term.c = c;
}

void
resettitle(void)
{
	xsettitle(NULL);
}

void
drawregion(int x1, int y1, int x2, int y2)
{
	int y;
	for (y = y1; y < y2; y++) {
		if (!term.dirty[y])
			continue;

		term.dirty[y] = 0;
		xdrawline(TLINE(y), x1, y, x2);
	}
}

void
draw(void)
{
	int cx = term.c.x;

	if (!xstartdraw())
		return;

	/* adjust cursor position */
	LIMIT(term.ocx, 0, term.col-1);
	LIMIT(term.ocy, 0, term.row-1);
	if (term.line[term.ocy][term.ocx].mode & ATTR_WDUMMY)
		term.ocx--;
	if (term.line[term.c.y][cx].mode & ATTR_WDUMMY)
		cx--;

	drawregion(0, 0, term.col, term.row);
	if (term.scr == 0)
		xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
				term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
	term.ocx = cx, term.ocy = term.c.y;
	xfinishdraw();
}

void
redraw(void)
{
	tfulldirt();
	draw();
}

char *
findlastany(char *str, const char** find, size_t len)
{
	char* found = NULL;
	int i = 0;
	for(found = str + strlen(str) - 1; found >= str; --found) {
		for(i = 0; i < len; i++) {
			if(strncmp(found, find[i], strlen(find[i])) == 0) {
				return found;
			}
		}
	}

	return NULL;
}

/*
** Select and copy the previous url on screen (do nothing if there's no url).
**
** FIXME: doesn't handle urls that span multiple lines; will need to add support
**        for multiline "getsel()" first
*/
void
copyurl(const Arg *arg) {
	/* () and [] can appear in urls, but excluding them here will reduce false
	 * positives when figuring out where a given url ends.
	 */
	static char URLCHARS[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
		"abcdefghijklmnopqrstuvwxyz"
		"0123456789-._~:/?#@!$&'*+,;=%";

	static const char* URLSTRINGS[] = {"http://", "https://"};

	/* remove highlighting from previous selection if any */
	if(sel.ob.x >= 0 && sel.oe.x >= 0)
		tsetcolor(sel.nb.y, sel.ob.x, sel.oe.x + 1, defaultfg, defaultbg);

	int i = 0,
		row = 0, /* row of current URL */
		col = 0, /* column of current URL start */
		startrow = 0, /* row of last occurrence */
		colend = 0, /* column of last occurrence */
		passes = 0; /* how many rows have been scanned */

	char *linestr = calloc(sizeof(char), term.col+1); /* assume ascii */
	char *c = NULL,
		 *match = NULL;

	row = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.y : term.bot;
	LIMIT(row, term.top, term.bot);
	startrow = row;

	colend = (sel.ob.x >= 0 && sel.nb.y > 0) ? sel.nb.x : term.col;
	LIMIT(colend, 0, term.col);

	/*
 	** Scan from (term.bot,term.col) to (0,0) and find
	** next occurrance of a URL
	*/
	while(passes !=term.bot + 2) {
		/* Read in each column of every row until
 		** we hit previous occurrence of URL
		*/
		for (col = 0, i = 0; col < colend; ++col,++i) {
			/* assume ascii */
			if (term.line[row][col].u > 127)
				continue;
			linestr[i] = term.line[row][col].u;
		}
		linestr[term.col] = '\0';

		if ((match = findlastany(linestr, URLSTRINGS,
						sizeof(URLSTRINGS)/sizeof(URLSTRINGS[0]))))
			break;

		if (--row < term.top)
			row = term.bot;

		colend = term.col;
		passes++;
	};

	if (match) {
		/* must happen before trim */
		selclear();
		sel.ob.x = strlen(linestr) - strlen(match);

		/* trim the rest of the line from the url match */
		for (c = match; *c != '\0'; ++c)
			if (!strchr(URLCHARS, *c)) {
				*c = '\0';
				break;
			}

		/* highlight selection by inverting terminal colors */
		tsetcolor(row, sel.ob.x, sel.ob.x + strlen( match ), defaultbg, defaultfg);

		/* select and copy */
		sel.mode = 1;
		sel.type = SEL_REGULAR;
		sel.oe.x = sel.ob.x + strlen(match)-1;
		sel.ob.y = sel.oe.y = row;
		selnormalize();
		tsetdirt(sel.nb.y, sel.ne.y);
		xsetsel(getsel());
		xclipcopy();
	}

	free(linestr);
}

seth · 2019-02-17 20:15:50

Sorry, the alpha is actually used in x.c - my bad.
You can also check for yourself, but if there's a line

dc.col[defaultbg].color.alpha = (unsigned short)(0xffff * alpha);

in your patched x.c, alpha is supposed to be a float < 1

arglinug · 2019-02-17 22:16:07

Ok so it still looks like it is using the hex color code rather than an integer...

/* See LICENSE for license details. */
#include <errno.h>
#include <math.h>
#include <limits.h>
#include <locale.h>
#include <signal.h>
#include <sys/select.h>
#include <time.h>
#include <unistd.h>
#include <libgen.h>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
#include <X11/Xft/Xft.h>
#include <X11/XKBlib.h>

static char *argv0;
#include "arg.h"
#include "st.h"
#include "win.h"

/* types used in config.h */
typedef struct {
	uint mod;
	KeySym keysym;
	void (*func)(const Arg *);
	const Arg arg;
} Shortcut;

typedef struct {
	uint b;
	uint mask;
	char *s;
} MouseShortcut;

typedef struct {
	KeySym k;
	uint mask;
	char *s;
	/* three-valued logic variables: 0 indifferent, 1 on, -1 off */
	signed char appkey;    /* application keypad */
	signed char appcursor; /* application cursor */
} Key;

/* X modifiers */
#define XK_ANY_MOD    UINT_MAX
#define XK_NO_MOD     0
#define XK_SWITCH_MOD (1<<13)

/* alpha */
#define OPAQUE 0Xff
#define USE_ARGB (alpha != OPAQUE && opt_embed == NULL)

/* function definitions used in config.h */
static void clipcopy(const Arg *);
static void clippaste(const Arg *);
static void numlock(const Arg *);
static void selpaste(const Arg *);
static void zoom(const Arg *);
static void zoomabs(const Arg *);
static void zoomreset(const Arg *);

/* config.h for applying patches and the configuration. */
#include "config.h"

/* XEMBED messages */
#define XEMBED_FOCUS_IN  4
#define XEMBED_FOCUS_OUT 5

/* macros */
#define IS_SET(flag)		((win.mode & (flag)) != 0)
#define TRUERED(x)		(((x) & 0xff0000) >> 8)
#define TRUEGREEN(x)		(((x) & 0xff00))
#define TRUEBLUE(x)		(((x) & 0xff) << 8)

typedef XftDraw *Draw;
typedef XftColor Color;
typedef XftGlyphFontSpec GlyphFontSpec;

/* Purely graphic info */
typedef struct {
	int tw, th; /* tty width and height */
	int w, h; /* window width and height */
	int ch; /* char height */
	int cw; /* char width  */
	int mode; /* window state/mode flags */
	int cursor; /* cursor style */
} TermWindow;

typedef struct {
	Display *dpy;
	Colormap cmap;
	Window win;
	Drawable buf;
	GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
	Atom xembed, wmdeletewin, netwmname, netwmpid;
	XIM xim;
	XIC xic;
	Draw draw;
	Visual *vis;
	XSetWindowAttributes attrs;
	/* Here, we use the term *pointer* to differentiate the cursor
	 * one sees when hovering the mouse over the terminal from, e.g.,
	 * a green rectangle where text would be entered. */
	Cursor vpointer, bpointer; /* visible and hidden pointers */
	int pointerisvisible;
	int scr;
	int isfixed; /* is fixed geometry? */
	int depth; /* bit depth */
	int l, t; /* left and top offset */
	int gm; /* geometry mask */
} XWindow;

typedef struct {
	Atom xtarget;
	char *primary, *clipboard;
	struct timespec tclick1;
	struct timespec tclick2;
} XSelection;

/* Font structure */
#define Font Font_
typedef struct {
	int height;
	int width;
	int ascent;
	int descent;
	int badslant;
	int badweight;
	short lbearing;
	short rbearing;
	XftFont *match;
	FcFontSet *set;
	FcPattern *pattern;
} Font;

/* Drawing Context */
typedef struct {
	Color *col;
	size_t collen;
	Font font, bfont, ifont, ibfont;
	GC gc;
} DC;

static inline ushort sixd_to_16bit(int);
static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
static void xdrawglyph(Glyph, int, int);
static void xclear(int, int, int, int);
static int xgeommasktogravity(int);
static void xinit(int, int);
static void cresize(int, int);
static void xresize(int, int);
static void xhints(void);
static int xloadcolor(int, const char *, Color *);
static int xloadfont(Font *, FcPattern *);
static void xloadfonts(char *, double);
static void xunloadfont(Font *);
static void xunloadfonts(void);
static void xsetenv(void);
static void xseturgency(int);
static int evcol(XEvent *);
static int evrow(XEvent *);

static void expose(XEvent *);
static void visibility(XEvent *);
static void unmap(XEvent *);
static void kpress(XEvent *);
static void cmessage(XEvent *);
static void resize(XEvent *);
static void focus(XEvent *);
static void brelease(XEvent *);
static void bpress(XEvent *);
static void bmotion(XEvent *);
static void propnotify(XEvent *);
static void selnotify(XEvent *);
static void selclear_(XEvent *);
static void selrequest(XEvent *);
static void setsel(char *, Time);
static void mousesel(XEvent *, int);
static void mousereport(XEvent *);
static char *kmap(KeySym, uint);
static int match(uint, uint);

static void run(void);
static void usage(void);

static void (*handler[LASTEvent])(XEvent *) = {
	[KeyPress] = kpress,
	[ClientMessage] = cmessage,
	[ConfigureNotify] = resize,
	[VisibilityNotify] = visibility,
	[UnmapNotify] = unmap,
	[Expose] = expose,
	[FocusIn] = focus,
	[FocusOut] = focus,
	[MotionNotify] = bmotion,
	[ButtonPress] = bpress,
	[ButtonRelease] = brelease,
/*
 * Uncomment if you want the selection to disappear when you select something
 * different in another window.
 */
/*	[SelectionClear] = selclear_, */
	[SelectionNotify] = selnotify,
/*
 * PropertyNotify is only turned on when there is some INCR transfer happening
 * for the selection retrieval.
 */
	[PropertyNotify] = propnotify,
	[SelectionRequest] = selrequest,
};

/* Globals */
static DC dc;
static XWindow xw;
static XSelection xsel;
static TermWindow win;

/* Font Ring Cache */
enum {
	FRC_NORMAL,
	FRC_ITALIC,
	FRC_BOLD,
	FRC_ITALICBOLD
};

typedef struct {
	XftFont *font;
	int flags;
	Rune unicodep;
} Fontcache;

/* Fontcache is an array now. A new font will be appended to the array. */
static Fontcache frc[16];
static int frclen = 0;
static char *usedfont = NULL;
static double usedfontsize = 0;
static double defaultfontsize = 0;

static char *opt_class = NULL;
static char **opt_cmd  = NULL;
static char *opt_embed = NULL;
static char *opt_font  = NULL;
static char *opt_io    = NULL;
static char *opt_line  = NULL;
static char *opt_name  = NULL;
static char *opt_title = NULL;

static int oldbutton = 3; /* button event on startup: 3 = release */

void
clipcopy(const Arg *dummy)
{
	Atom clipboard;

	free(xsel.clipboard);
	xsel.clipboard = NULL;

	if (xsel.primary != NULL) {
		xsel.clipboard = xstrdup(xsel.primary);
		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
		XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
	}
}

void
clippaste(const Arg *dummy)
{
	Atom clipboard;

	clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
	XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
			xw.win, CurrentTime);
}

void
selpaste(const Arg *dummy)
{
	XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
			xw.win, CurrentTime);
}

void
numlock(const Arg *dummy)
{
	win.mode ^= MODE_NUMLOCK;
}

void
zoom(const Arg *arg)
{
	Arg larg;

	larg.f = usedfontsize + arg->f;
	zoomabs(&larg);
}

void
zoomabs(const Arg *arg)
{
	xunloadfonts();
	xloadfonts(usedfont, arg->f);
	cresize(0, 0);
	redraw();
	xhints();
}

void
zoomreset(const Arg *arg)
{
	Arg larg;

	if (defaultfontsize > 0) {
		larg.f = defaultfontsize;
		zoomabs(&larg);
	}
}

int
evcol(XEvent *e)
{
	int x = e->xbutton.x - borderpx;
	LIMIT(x, 0, win.tw - 1);
	return x / win.cw;
}

int
evrow(XEvent *e)
{
	int y = e->xbutton.y - borderpx;
	LIMIT(y, 0, win.th - 1);
	return y / win.ch;
}

void
mousesel(XEvent *e, int done)
{
	int type, seltype = SEL_REGULAR;
	uint state = e->xbutton.state & ~(Button1Mask | forceselmod);

	for (type = 1; type < LEN(selmasks); ++type) {
		if (match(selmasks[type], state)) {
			seltype = type;
			break;
		}
	}
	selextend(evcol(e), evrow(e), seltype, done);
	if (done)
		setsel(getsel(), e->xbutton.time);
}

void
mousereport(XEvent *e)
{
	int len, x = evcol(e), y = evrow(e),
	    button = e->xbutton.button, state = e->xbutton.state;
	char buf[40];
	static int ox, oy;

	/* from urxvt */
	if (e->xbutton.type == MotionNotify) {
		if (x == ox && y == oy)
			return;
		if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
			return;
		/* MOUSE_MOTION: no reporting if no button is pressed */
		if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
			return;

		button = oldbutton + 32;
		ox = x;
		oy = y;
	} else {
		if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
			button = 3;
		} else {
			button -= Button1;
			if (button >= 3)
				button += 64 - 3;
		}
		if (e->xbutton.type == ButtonPress) {
			oldbutton = button;
			ox = x;
			oy = y;
		} else if (e->xbutton.type == ButtonRelease) {
			oldbutton = 3;
			/* MODE_MOUSEX10: no button release reporting */
			if (IS_SET(MODE_MOUSEX10))
				return;
			if (button == 64 || button == 65)
				return;
		}
	}

	if (!IS_SET(MODE_MOUSEX10)) {
		button += ((state & ShiftMask  ) ? 4  : 0)
			+ ((state & Mod4Mask   ) ? 8  : 0)
			+ ((state & ControlMask) ? 16 : 0);
	}

	if (IS_SET(MODE_MOUSESGR)) {
		len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
				button, x+1, y+1,
				e->xbutton.type == ButtonRelease ? 'm' : 'M');
	} else if (x < 223 && y < 223) {
		len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
				32+button, 32+x+1, 32+y+1);
	} else {
		return;
	}

	ttywrite(buf, len, 0);
}

void
bpress(XEvent *e)
{
	struct timespec now;
	MouseShortcut *ms;
	MouseKey *mk;
	int snap;

	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
		mousereport(e);
		return;
	}

	for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
		if (e->xbutton.button == ms->b
				&& match(ms->mask, e->xbutton.state)) {
			ttywrite(ms->s, strlen(ms->s), 1);
			return;
		}
	}

	for (mk = mkeys; mk < mkeys + LEN(mkeys); mk++) {
		if (e->xbutton.button == mk->b
				&& match(mk->mask, e->xbutton.state)) {
			mk->func(&mk->arg);
			return;
		}
	}

	if (e->xbutton.button == Button1) {
		/*
		 * If the user clicks below predefined timeouts specific
		 * snapping behaviour is exposed.
		 */
		clock_gettime(CLOCK_MONOTONIC, &now);
		if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
			snap = SNAP_LINE;
		} else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
			snap = SNAP_WORD;
		} else {
			snap = 0;
		}
		xsel.tclick2 = xsel.tclick1;
		xsel.tclick1 = now;

		selstart(evcol(e), evrow(e), snap);
	}
}

void
propnotify(XEvent *e)
{
	XPropertyEvent *xpev;
	Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);

	xpev = &e->xproperty;
	if (xpev->state == PropertyNewValue &&
			(xpev->atom == XA_PRIMARY ||
			 xpev->atom == clipboard)) {
		selnotify(e);
	}
}

void
selnotify(XEvent *e)
{
	ulong nitems, ofs, rem;
	int format;
	uchar *data, *last, *repl;
	Atom type, incratom, property = None;

	incratom = XInternAtom(xw.dpy, "INCR", 0);

	ofs = 0;
	if (e->type == SelectionNotify)
		property = e->xselection.property;
	else if (e->type == PropertyNotify)
		property = e->xproperty.atom;

	if (property == None)
		return;

	do {
		if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
					BUFSIZ/4, False, AnyPropertyType,
					&type, &format, &nitems, &rem,
					&data)) {
			fprintf(stderr, "Clipboard allocation failed\n");
			return;
		}

		if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
			/*
			 * If there is some PropertyNotify with no data, then
			 * this is the signal of the selection owner that all
			 * data has been transferred. We won't need to receive
			 * PropertyNotify events anymore.
			 */
			MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
			XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
					&xw.attrs);
		}

		if (type == incratom) {
			/*
			 * Activate the PropertyNotify events so we receive
			 * when the selection owner does send us the next
			 * chunk of data.
			 */
			MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
			XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
					&xw.attrs);

			/*
			 * Deleting the property is the transfer start signal.
			 */
			XDeleteProperty(xw.dpy, xw.win, (int)property);
			continue;
		}

		/*
		 * As seen in getsel:
		 * Line endings are inconsistent in the terminal and GUI world
		 * copy and pasting. When receiving some selection data,
		 * replace all '\n' with '\r'.
		 * FIXME: Fix the computer world.
		 */
		repl = data;
		last = data + nitems * format / 8;
		while ((repl = memchr(repl, '\n', last - repl))) {
			*repl++ = '\r';
		}

		if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
			ttywrite("\033[200~", 6, 0);
		ttywrite((char *)data, nitems * format / 8, 1);
		if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
			ttywrite("\033[201~", 6, 0);
		XFree(data);
		/* number of 32-bit chunks returned */
		ofs += nitems * format / 32;
	} while (rem > 0);

	/*
	 * Deleting the property again tells the selection owner to send the
	 * next data chunk in the property.
	 */
	XDeleteProperty(xw.dpy, xw.win, (int)property);
}

void
xclipcopy(void)
{
	clipcopy(NULL);
}

void
selclear_(XEvent *e)
{
	selclear();
}

void
selrequest(XEvent *e)
{
	XSelectionRequestEvent *xsre;
	XSelectionEvent xev;
	Atom xa_targets, string, clipboard;
	char *seltext;

	xsre = (XSelectionRequestEvent *) e;
	xev.type = SelectionNotify;
	xev.requestor = xsre->requestor;
	xev.selection = xsre->selection;
	xev.target = xsre->target;
	xev.time = xsre->time;
	if (xsre->property == None)
		xsre->property = xsre->target;

	/* reject */
	xev.property = None;

	xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
	if (xsre->target == xa_targets) {
		/* respond with the supported type */
		string = xsel.xtarget;
		XChangeProperty(xsre->display, xsre->requestor, xsre->property,
				XA_ATOM, 32, PropModeReplace,
				(uchar *) &string, 1);
		xev.property = xsre->property;
	} else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
		/*
		 * xith XA_STRING non ascii characters may be incorrect in the
		 * requestor. It is not our problem, use utf8.
		 */
		clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
		if (xsre->selection == XA_PRIMARY) {
			seltext = xsel.primary;
		} else if (xsre->selection == clipboard) {
			seltext = xsel.clipboard;
		} else {
			fprintf(stderr,
				"Unhandled clipboard selection 0x%lx\n",
				xsre->selection);
			return;
		}
		if (seltext != NULL) {
			XChangeProperty(xsre->display, xsre->requestor,
					xsre->property, xsre->target,
					8, PropModeReplace,
					(uchar *)seltext, strlen(seltext));
			xev.property = xsre->property;
		}
	}

	/* all done, send a notification to the listener */
	if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
		fprintf(stderr, "Error sending SelectionNotify event\n");
}

void
setsel(char *str, Time t)
{
	if (!str)
		return;

	free(xsel.primary);
	xsel.primary = str;

	XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
	if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
		selclear();

	xclipcopy();
}

void
xsetsel(char *str)
{
	setsel(str, CurrentTime);
}

void
brelease(XEvent *e)
{
	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
		mousereport(e);
		return;
	}

	if (e->xbutton.button == Button2)
		selpaste(NULL);
	else if (e->xbutton.button == Button1)
		mousesel(e, 1);
}

void
bmotion(XEvent *e)
{
	if (!xw.pointerisvisible) {
		XDefineCursor(xw.dpy, xw.win, xw.vpointer);
		xw.pointerisvisible = 1;
		if (!IS_SET(MODE_MOUSEMANY))
			xsetpointermotion(0);
	}

	if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
		mousereport(e);
		return;
	}

	mousesel(e, 0);
}

void
cresize(int width, int height)
{
	int col, row;

	if (width != 0)
		win.w = width;
	if (height != 0)
		win.h = height;

	col = (win.w - 2 * borderpx) / win.cw;
	row = (win.h - 2 * borderpx) / win.ch;
	col = MAX(1, col);
	row = MAX(1, row);

	tresize(col, row);
	xresize(col, row);
	ttyresize(win.tw, win.th);
}

void
xresize(int col, int row)
{
	win.tw = col * win.cw;
	win.th = row * win.ch;

	XFreePixmap(xw.dpy, xw.buf);
	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
			xw.depth);
	XftDrawChange(xw.draw, xw.buf);
	xclear(0, 0, win.w, win.h);

	/* resize to new width */
	xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
}

ushort
sixd_to_16bit(int x)
{
	return x == 0 ? 0 : 0x3737 + 0x2828 * x;
}

int
xloadcolor(int i, const char *name, Color *ncolor)
{
	XRenderColor color = { .alpha = 0xffff };

	if (!name) {
		if (BETWEEN(i, 16, 255)) { /* 256 color */
			if (i < 6*6*6+16) { /* same colors as xterm */
				color.red   = sixd_to_16bit( ((i-16)/36)%6 );
				color.green = sixd_to_16bit( ((i-16)/6) %6 );
				color.blue  = sixd_to_16bit( ((i-16)/1) %6 );
			} else { /* greyscale */
				color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
				color.green = color.blue = color.red;
			}
			return XftColorAllocValue(xw.dpy, xw.vis,
			                          xw.cmap, &color, ncolor);
		} else
			name = colorname[i];
	}

	return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
}

void
xloadcols(void)
{
	int i;
	static int loaded;
	Color *cp;

	if (loaded) {
		for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
			XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
	} else {
		dc.collen = MAX(LEN(colorname), 256);
		dc.col = xmalloc(dc.collen * sizeof(Color));
	}

	for (i = 0; i < dc.collen; i++)
		if (!xloadcolor(i, NULL, &dc.col[i])) {
			if (colorname[i])
				die("could not allocate color '%s'\n", colorname[i]);
			else
				die("could not allocate color %d\n", i);
		}

	/* set alpha value of bg color */
	if (USE_ARGB) {
		dc.col[defaultbg].color.alpha = alpha << 8;
		dc.col[defaultbg].color.red   = ((dc.col[defaultbg].color.red >> 8) * alpha / 255) << 8;
		dc.col[defaultbg].color.green = ((dc.col[defaultbg].color.green >> 8) * alpha / 255) << 8;
		dc.col[defaultbg].color.blue  = ((dc.col[defaultbg].color.blue >> 8) * alpha / 255) << 8;
	}
	loaded = 1;
}

int
xsetcolorname(int x, const char *name)
{
	Color ncolor;

	if (!BETWEEN(x, 0, dc.collen))
		return 1;


	if (!xloadcolor(x, name, &ncolor))
		return 1;

	XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
	dc.col[x] = ncolor;

	return 0;
}

void
xtermclear(int col1, int row1, int col2, int row2)
{
	XftDrawRect(xw.draw,
			&dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
			borderpx + col1 * win.cw,
			borderpx + row1 * win.ch,
			(col2-col1+1) * win.cw,
			(row2-row1+1) * win.ch);
}

/*
 * Absolute coordinates.
 */
void
xclear(int x1, int y1, int x2, int y2)
{
	XftDrawRect(xw.draw,
			&dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
			x1, y1, x2-x1, y2-y1);
}

void
xhints(void)
{
	XClassHint class = {opt_name ? opt_name : termname,
	                    opt_class ? opt_class : termname};
	XWMHints wm = {.flags = InputHint, .input = 1};
	XSizeHints *sizeh;

	sizeh = XAllocSizeHints();

	sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
	sizeh->height = win.h;
	sizeh->width = win.w;
	sizeh->height_inc = win.ch;
	sizeh->width_inc = win.cw;
	sizeh->base_height = 2 * borderpx;
	sizeh->base_width = 2 * borderpx;
	sizeh->min_height = win.ch + 2 * borderpx;
	sizeh->min_width = win.cw + 2 * borderpx;
	if (xw.isfixed) {
		sizeh->flags |= PMaxSize;
		sizeh->min_width = sizeh->max_width = win.w;
		sizeh->min_height = sizeh->max_height = win.h;
	}
	if (xw.gm & (XValue|YValue)) {
		sizeh->flags |= USPosition | PWinGravity;
		sizeh->x = xw.l;
		sizeh->y = xw.t;
		sizeh->win_gravity = xgeommasktogravity(xw.gm);
	}

	XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
			&class);
	XFree(sizeh);
}

int
xgeommasktogravity(int mask)
{
	switch (mask & (XNegative|YNegative)) {
	case 0:
		return NorthWestGravity;
	case XNegative:
		return NorthEastGravity;
	case YNegative:
		return SouthWestGravity;
	}

	return SouthEastGravity;
}

int
xloadfont(Font *f, FcPattern *pattern)
{
	FcPattern *configured;
	FcPattern *match;
	FcResult result;
	XGlyphInfo extents;
	int wantattr, haveattr;

	/*
	 * Manually configure instead of calling XftMatchFont
	 * so that we can use the configured pattern for
	 * "missing glyph" lookups.
	 */
	configured = FcPatternDuplicate(pattern);
	if (!configured)
		return 1;

	FcConfigSubstitute(NULL, configured, FcMatchPattern);
	XftDefaultSubstitute(xw.dpy, xw.scr, configured);

	match = FcFontMatch(NULL, configured, &result);
	if (!match) {
		FcPatternDestroy(configured);
		return 1;
	}

	if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
		FcPatternDestroy(configured);
		FcPatternDestroy(match);
		return 1;
	}

	if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
	    XftResultMatch)) {
		/*
		 * Check if xft was unable to find a font with the appropriate
		 * slant but gave us one anyway. Try to mitigate.
		 */
		if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
		    &haveattr) != XftResultMatch) || haveattr < wantattr) {
			f->badslant = 1;
			fputs("font slant does not match\n", stderr);
		}
	}

	if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
	    XftResultMatch)) {
		if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
		    &haveattr) != XftResultMatch) || haveattr != wantattr) {
			f->badweight = 1;
			fputs("font weight does not match\n", stderr);
		}
	}

	XftTextExtentsUtf8(xw.dpy, f->match,
		(const FcChar8 *) ascii_printable,
		strlen(ascii_printable), &extents);

	f->set = NULL;
	f->pattern = configured;

	f->ascent = f->match->ascent;
	f->descent = f->match->descent;
	f->lbearing = 0;
	f->rbearing = f->match->max_advance_width;

	f->height = f->ascent + f->descent;
	f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));

	return 0;
}

void
xloadfonts(char *fontstr, double fontsize)
{
	FcPattern *pattern;
	double fontval;

	if (fontstr[0] == '-')
		pattern = XftXlfdParse(fontstr, False, False);
	else
		pattern = FcNameParse((FcChar8 *)fontstr);

	if (!pattern)
		die("can't open font %s\n", fontstr);

	if (fontsize > 1) {
		FcPatternDel(pattern, FC_PIXEL_SIZE);
		FcPatternDel(pattern, FC_SIZE);
		FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
		usedfontsize = fontsize;
	} else {
		if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
				FcResultMatch) {
			usedfontsize = fontval;
		} else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
				FcResultMatch) {
			usedfontsize = -1;
		} else {
			/*
			 * Default font size is 12, if none given. This is to
			 * have a known usedfontsize value.
			 */
			FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
			usedfontsize = 12;
		}
		defaultfontsize = usedfontsize;
	}

	if (xloadfont(&dc.font, pattern))
		die("can't open font %s\n", fontstr);

	if (usedfontsize < 0) {
		FcPatternGetDouble(dc.font.match->pattern,
		                   FC_PIXEL_SIZE, 0, &fontval);
		usedfontsize = fontval;
		if (fontsize == 0)
			defaultfontsize = fontval;
	}

	/* Setting character width and height. */
	win.cw = ceilf(dc.font.width * cwscale);
	win.ch = ceilf(dc.font.height * chscale);

	FcPatternDel(pattern, FC_SLANT);
	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
	if (xloadfont(&dc.ifont, pattern))
		die("can't open font %s\n", fontstr);

	FcPatternDel(pattern, FC_WEIGHT);
	FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
	if (xloadfont(&dc.ibfont, pattern))
		die("can't open font %s\n", fontstr);

	FcPatternDel(pattern, FC_SLANT);
	FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
	if (xloadfont(&dc.bfont, pattern))
		die("can't open font %s\n", fontstr);

	FcPatternDestroy(pattern);
}

void
xunloadfont(Font *f)
{
	XftFontClose(xw.dpy, f->match);
	FcPatternDestroy(f->pattern);
	if (f->set)
		FcFontSetDestroy(f->set);
}

void
xunloadfonts(void)
{
	/* Free the loaded fonts in the font cache.  */
	while (frclen > 0)
		XftFontClose(xw.dpy, frc[--frclen].font);

	xunloadfont(&dc.font);
	xunloadfont(&dc.bfont);
	xunloadfont(&dc.ifont);
	xunloadfont(&dc.ibfont);
}

void
xinit(int cols, int rows)
{
	XGCValues gcvalues;
	Window parent;
	pid_t thispid = getpid();
	XColor xmousefg, xmousebg;
	Pixmap blankpm;

	if (!(xw.dpy = XOpenDisplay(NULL)))
		die("can't open display\n");
	xw.scr = XDefaultScreen(xw.dpy);
	xw.depth = (USE_ARGB) ? 32: XDefaultDepth(xw.dpy, xw.scr);
	if (!USE_ARGB)
		xw.vis = XDefaultVisual(xw.dpy, xw.scr);
	else {
		XVisualInfo *vis;
		XRenderPictFormat *fmt;
		int nvi;
		int i;

		XVisualInfo tpl = {
			.screen = xw.scr,
			.depth = 32,
			.class = TrueColor
		};

		vis = XGetVisualInfo(xw.dpy,
				VisualScreenMask | VisualDepthMask | VisualClassMask,
				&tpl, &nvi);
		xw.vis = NULL;
		for (i = 0; i < nvi; i++) {
			fmt = XRenderFindVisualFormat(xw.dpy, vis[i].visual);
			if (fmt->type == PictTypeDirect && fmt->direct.alphaMask) {
				xw.vis = vis[i].visual;
				break;
			}
		}

		XFree(vis);

		if (!xw.vis) {
			fprintf(stderr, "Couldn't find ARGB visual.\n");
			exit(1);
		}
	}

	/* font */
	if (!FcInit())
		die("could not init fontconfig.\n");

	usedfont = (opt_font == NULL)? font : opt_font;
	xloadfonts(usedfont, 0);

	/* colors */
	if (!USE_ARGB)
		xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
	else
		xw.cmap = XCreateColormap(xw.dpy, XRootWindow(xw.dpy, xw.scr),
				xw.vis, None);
	xloadcols();

	/* adjust fixed window geometry */
	win.w = 2 * borderpx + cols * win.cw;
	win.h = 2 * borderpx + rows * win.ch;
	if (xw.gm & XNegative)
		xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
	if (xw.gm & YNegative)
		xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;

	/* Events */
	xw.attrs.background_pixel = dc.col[defaultbg].pixel;
	xw.attrs.border_pixel = dc.col[defaultbg].pixel;
	xw.attrs.bit_gravity = NorthWestGravity;
	xw.attrs.event_mask = FocusChangeMask | KeyPressMask
		| ExposureMask | VisibilityChangeMask | StructureNotifyMask
		| ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
	xw.attrs.colormap = xw.cmap;

	if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
		parent = XRootWindow(xw.dpy, xw.scr);
	xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
			win.w, win.h, 0, xw.depth, InputOutput,
			xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
			| CWEventMask | CWColormap, &xw.attrs);

	memset(&gcvalues, 0, sizeof(gcvalues));
	gcvalues.graphics_exposures = False;
	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h, xw.depth);
	dc.gc = XCreateGC(xw.dpy, (USE_ARGB) ? xw.buf: parent,
			GCGraphicsExposures, &gcvalues);
	XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);

	/* font spec buffer */
	xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));

	/* Xft rendering context */
	xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);

	/* input methods */
	if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
		XSetLocaleModifiers("@im=local");
		if ((xw.xim =  XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
			XSetLocaleModifiers("@im=");
			if ((xw.xim = XOpenIM(xw.dpy,
					NULL, NULL, NULL)) == NULL) {
				die("XOpenIM failed. Could not open input"
					" device.\n");
			}
		}
	}
	xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
					   | XIMStatusNothing, XNClientWindow, xw.win,
					   XNFocusWindow, xw.win, NULL);
	if (xw.xic == NULL)
		die("XCreateIC failed. Could not obtain input method.\n");

	/* white cursor, black outline */
	xw.pointerisvisible = 1;
	xw.vpointer = XCreateFontCursor(xw.dpy, mouseshape);
	XDefineCursor(xw.dpy, xw.win, xw.vpointer);

	if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
		xmousefg.red   = 0xffff;
		xmousefg.green = 0xffff;
		xmousefg.blue  = 0xffff;
	}

	if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
		xmousebg.red   = 0x0000;
		xmousebg.green = 0x0000;
		xmousebg.blue  = 0x0000;
	}

	XRecolorCursor(xw.dpy, xw.vpointer, &xmousefg, &xmousebg);
	blankpm = XCreateBitmapFromData(xw.dpy, xw.win, &(char){0}, 1, 1);
	xw.bpointer = XCreatePixmapCursor(xw.dpy, blankpm, blankpm,
					  &xmousefg, &xmousebg, 0, 0);

	xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
	xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
	xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
	XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);

	xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
	XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
			PropModeReplace, (uchar *)&thispid, 1);

	win.mode = MODE_NUMLOCK;
	resettitle();
	XMapWindow(xw.dpy, xw.win);
	xhints();
	XSync(xw.dpy, False);

	clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
	clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
	xsel.primary = NULL;
	xsel.clipboard = NULL;
	xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
	if (xsel.xtarget == None)
		xsel.xtarget = XA_STRING;
}

int
xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
{
	float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
	ushort mode, prevmode = USHRT_MAX;
	Font *font = &dc.font;
	int frcflags = FRC_NORMAL;
	float runewidth = win.cw;
	Rune rune;
	FT_UInt glyphidx;
	FcResult fcres;
	FcPattern *fcpattern, *fontpattern;
	FcFontSet *fcsets[] = { NULL };
	FcCharSet *fccharset;
	int i, f, numspecs = 0;

	for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
		/* Fetch rune and mode for current glyph. */
		rune = glyphs[i].u;
		mode = glyphs[i].mode;

		/* Skip dummy wide-character spacing. */
		if (mode == ATTR_WDUMMY)
			continue;

		/* Determine font for glyph if different from previous glyph. */
		if (prevmode != mode) {
			prevmode = mode;
			font = &dc.font;
			frcflags = FRC_NORMAL;
			runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
			if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
				font = &dc.ibfont;
				frcflags = FRC_ITALICBOLD;
			} else if (mode & ATTR_ITALIC) {
				font = &dc.ifont;
				frcflags = FRC_ITALIC;
			} else if (mode & ATTR_BOLD) {
				font = &dc.bfont;
				frcflags = FRC_BOLD;
			}
			yp = winy + font->ascent;
		}

		/* Lookup character index with default font. */
		glyphidx = XftCharIndex(xw.dpy, font->match, rune);
		if (glyphidx) {
			specs[numspecs].font = font->match;
			specs[numspecs].glyph = glyphidx;
			specs[numspecs].x = (short)xp;
			specs[numspecs].y = (short)yp;
			xp += runewidth;
			numspecs++;
			continue;
		}

		/* Fallback on font cache, search the font cache for match. */
		for (f = 0; f < frclen; f++) {
			glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
			/* Everything correct. */
			if (glyphidx && frc[f].flags == frcflags)
				break;
			/* We got a default font for a not found glyph. */
			if (!glyphidx && frc[f].flags == frcflags
					&& frc[f].unicodep == rune) {
				break;
			}
		}

		/* Nothing was found. Use fontconfig to find matching font. */
		if (f >= frclen) {
			if (!font->set)
				font->set = FcFontSort(0, font->pattern,
				                       1, 0, &fcres);
			fcsets[0] = font->set;

			/*
			 * Nothing was found in the cache. Now use
			 * some dozen of Fontconfig calls to get the
			 * font for one single character.
			 *
			 * Xft and fontconfig are design failures.
			 */
			fcpattern = FcPatternDuplicate(font->pattern);
			fccharset = FcCharSetCreate();

			FcCharSetAddChar(fccharset, rune);
			FcPatternAddCharSet(fcpattern, FC_CHARSET,
					fccharset);
			FcPatternAddBool(fcpattern, FC_SCALABLE, 1);

			FcConfigSubstitute(0, fcpattern,
					FcMatchPattern);
			FcDefaultSubstitute(fcpattern);

			fontpattern = FcFontSetMatch(0, fcsets, 1,
					fcpattern, &fcres);

			/*
			 * Overwrite or create the new cache entry.
			 */
			if (frclen >= LEN(frc)) {
				frclen = LEN(frc) - 1;
				XftFontClose(xw.dpy, frc[frclen].font);
				frc[frclen].unicodep = 0;
			}

			frc[frclen].font = XftFontOpenPattern(xw.dpy,
					fontpattern);
			if (!frc[frclen].font)
				die("XftFontOpenPattern failed seeking fallback font: %s\n",
					strerror(errno));
			frc[frclen].flags = frcflags;
			frc[frclen].unicodep = rune;

			glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);

			f = frclen;
			frclen++;

			FcPatternDestroy(fcpattern);
			FcCharSetDestroy(fccharset);
		}

		specs[numspecs].font = frc[f].font;
		specs[numspecs].glyph = glyphidx;
		specs[numspecs].x = (short)xp;
		specs[numspecs].y = (short)yp;
		xp += runewidth;
		numspecs++;
	}

	return numspecs;
}

void
xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
{
	int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
	int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
	    width = charlen * win.cw;
	Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
	XRenderColor colfg, colbg;
	XRectangle r;

	/* Fallback on color display for attributes not supported by the font */
	if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
		if (dc.ibfont.badslant || dc.ibfont.badweight)
			base.fg = defaultattr;
	} else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
	    (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
		base.fg = defaultattr;
	}

	if (IS_TRUECOL(base.fg)) {
		colfg.alpha = 0xffff;
		colfg.red = TRUERED(base.fg);
		colfg.green = TRUEGREEN(base.fg);
		colfg.blue = TRUEBLUE(base.fg);
		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
		fg = &truefg;
	} else {
		fg = &dc.col[base.fg];
	}

	if (IS_TRUECOL(base.bg)) {
		colbg.alpha = 0xffff;
		colbg.green = TRUEGREEN(base.bg);
		colbg.red = TRUERED(base.bg);
		colbg.blue = TRUEBLUE(base.bg);
		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
		bg = &truebg;
	} else {
		bg = &dc.col[base.bg];
	}

	/* Change basic system colors [0-7] to bright system colors [8-15] */
	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
		fg = &dc.col[base.fg + 8];

	if (IS_SET(MODE_REVERSE)) {
		if (fg == &dc.col[defaultfg]) {
			fg = &dc.col[defaultbg];
		} else {
			colfg.red = ~fg->color.red;
			colfg.green = ~fg->color.green;
			colfg.blue = ~fg->color.blue;
			colfg.alpha = fg->color.alpha;
			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
					&revfg);
			fg = &revfg;
		}

		if (bg == &dc.col[defaultbg]) {
			bg = &dc.col[defaultfg];
		} else {
			colbg.red = ~bg->color.red;
			colbg.green = ~bg->color.green;
			colbg.blue = ~bg->color.blue;
			colbg.alpha = bg->color.alpha;
			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
					&revbg);
			bg = &revbg;
		}
	}

	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
		colfg.red = fg->color.red / 2;
		colfg.green = fg->color.green / 2;
		colfg.blue = fg->color.blue / 2;
		colfg.alpha = fg->color.alpha;
		XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
		fg = &revfg;
	}

	if (base.mode & ATTR_REVERSE) {
		temp = fg;
		fg = bg;
		bg = temp;
	}

	if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
		fg = bg;

	if (base.mode & ATTR_INVISIBLE)
		fg = bg;

	/* Intelligent cleaning up of the borders. */
	if (x == 0) {
		xclear(0, (y == 0)? 0 : winy, borderpx,
			winy + win.ch +
			((winy + win.ch >= borderpx + win.th)? win.h : 0));
	}
	if (winx + width >= borderpx + win.tw) {
		xclear(winx + width, (y == 0)? 0 : winy, win.w,
			((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
	}
	if (y == 0)
		xclear(winx, 0, winx + width, borderpx);
	if (winy + win.ch >= borderpx + win.th)
		xclear(winx, winy + win.ch, winx + width, win.h);

	/* Clean up the region we want to draw to. */
	XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);

	/* Set the clip region because Xft is sometimes dirty. */
	r.x = 0;
	r.y = 0;
	r.height = win.ch;
	r.width = width;
	XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);

	/* Render the glyphs. */
	XftDrawGlyphFontSpec(xw.draw, fg, specs, len);

	/* Render underline and strikethrough. */
	if (base.mode & ATTR_UNDERLINE) {
		XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
				width, 1);
	}

	if (base.mode & ATTR_STRUCK) {
		XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
				width, 1);
	}

	/* Reset clip to none. */
	XftDrawSetClip(xw.draw, 0);
}

void
xdrawglyph(Glyph g, int x, int y)
{
	int numspecs;
	XftGlyphFontSpec spec;

	numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
	xdrawglyphfontspecs(&spec, g, numspecs, x, y);
}

void
xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
{
	Color drawcol;

	/* remove the old cursor */
	if (selected(ox, oy))
		og.mode ^= ATTR_REVERSE;
	xdrawglyph(og, ox, oy);

	if (IS_SET(MODE_HIDE))
		return;

	/*
	 * Select the right color for the right mode.
	 */
	g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;

	if (IS_SET(MODE_REVERSE)) {
		g.mode |= ATTR_REVERSE;
		g.bg = defaultfg;
		if (selected(cx, cy)) {
			drawcol = dc.col[defaultcs];
			g.fg = defaultrcs;
		} else {
			drawcol = dc.col[defaultrcs];
			g.fg = defaultcs;
		}
	} else {
		if (selected(cx, cy)) {
			g.fg = defaultfg;
			g.bg = defaultrcs;
		} else {
			g.fg = defaultbg;
			g.bg = defaultcs;
		}
		drawcol = dc.col[g.bg];
	}

	/* draw the new one */
	if (IS_SET(MODE_FOCUSED)) {
		switch (win.cursor) {
		case 7: /* st extension: snowman (U+2603) */
			g.u = 0x2603;
		case 0: /* Blinking Block */
		case 1: /* Blinking Block (Default) */
		case 2: /* Steady Block */
			xdrawglyph(g, cx, cy);
			break;
		case 3: /* Blinking Underline */
		case 4: /* Steady Underline */
			XftDrawRect(xw.draw, &drawcol,
					borderpx + cx * win.cw,
					borderpx + (cy + 1) * win.ch - \
						cursorthickness,
					win.cw, cursorthickness);
			break;
		case 5: /* Blinking bar */
		case 6: /* Steady bar */
			XftDrawRect(xw.draw, &drawcol,
					borderpx + cx * win.cw,
					borderpx + cy * win.ch,
					cursorthickness, win.ch);
			break;
		}
	} else {
		XftDrawRect(xw.draw, &drawcol,
				borderpx + cx * win.cw,
				borderpx + cy * win.ch,
				win.cw - 1, 1);
		XftDrawRect(xw.draw, &drawcol,
				borderpx + cx * win.cw,
				borderpx + cy * win.ch,
				1, win.ch - 1);
		XftDrawRect(xw.draw, &drawcol,
				borderpx + (cx + 1) * win.cw - 1,
				borderpx + cy * win.ch,
				1, win.ch - 1);
		XftDrawRect(xw.draw, &drawcol,
				borderpx + cx * win.cw,
				borderpx + (cy + 1) * win.ch - 1,
				win.cw, 1);
	}
}

void
xsetenv(void)
{
	char buf[sizeof(long) * 8 + 1];

	snprintf(buf, sizeof(buf), "%lu", xw.win);
	setenv("WINDOWID", buf, 1);
}

void
xsettitle(char *p)
{
	XTextProperty prop;
	DEFAULT(p, opt_title);

	Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
			&prop);
	XSetWMName(xw.dpy, xw.win, &prop);
	XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
	XFree(prop.value);
}

int
xstartdraw(void)
{
	return IS_SET(MODE_VISIBLE);
}

void
xdrawline(Line line, int x1, int y1, int x2)
{
	int i, x, ox, numspecs;
	Glyph base, new;
	XftGlyphFontSpec *specs = xw.specbuf;

	numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
	i = ox = 0;
	for (x = x1; x < x2 && i < numspecs; x++) {
		new = line[x];
		if (new.mode == ATTR_WDUMMY)
			continue;
		if (selected(x, y1))
			new.mode ^= ATTR_REVERSE;
		if (i > 0 && ATTRCMP(base, new)) {
			xdrawglyphfontspecs(specs, base, i, ox, y1);
			specs += i;
			numspecs -= i;
			i = 0;
		}
		if (i == 0) {
			ox = x;
			base = new;
		}
		i++;
	}
	if (i > 0)
		xdrawglyphfontspecs(specs, base, i, ox, y1);
}

void
xfinishdraw(void)
{
	XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
			win.h, 0, 0);
	XSetForeground(xw.dpy, dc.gc,
			dc.col[IS_SET(MODE_REVERSE)?
				defaultfg : defaultbg].pixel);
}

void
expose(XEvent *ev)
{
	redraw();
}

void
visibility(XEvent *ev)
{
	XVisibilityEvent *e = &ev->xvisibility;

	MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
}

void
unmap(XEvent *ev)
{
	win.mode &= ~MODE_VISIBLE;
}

void
xsetpointermotion(int set)
{
	if (!set && !xw.pointerisvisible)
		return;
	MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
	XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
}

void
xsetmode(int set, unsigned int flags)
{
	int mode = win.mode;
	MODBIT(win.mode, set, flags);
	if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
		redraw();
}

int
xsetcursor(int cursor)
{
	DEFAULT(cursor, 1);
	if (!BETWEEN(cursor, 0, 6))
		return 1;
	win.cursor = cursor;
	return 0;
}

void
xseturgency(int add)
{
	XWMHints *h = XGetWMHints(xw.dpy, xw.win);

	MODBIT(h->flags, add, XUrgencyHint);
	XSetWMHints(xw.dpy, xw.win, h);
	XFree(h);
}

void
xbell(void)
{
	if (!(IS_SET(MODE_FOCUSED)))
		xseturgency(1);
	if (bellvolume)
		XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
}

void
focus(XEvent *ev)
{
	XFocusChangeEvent *e = &ev->xfocus;

	if (e->mode == NotifyGrab)
		return;

	if (ev->type == FocusIn) {
		XSetICFocus(xw.xic);
		win.mode |= MODE_FOCUSED;
		xseturgency(0);
		if (IS_SET(MODE_FOCUS))
			ttywrite("\033[I", 3, 0);
	} else {
		XUnsetICFocus(xw.xic);
		win.mode &= ~MODE_FOCUSED;
		if (IS_SET(MODE_FOCUS))
			ttywrite("\033[O", 3, 0);
	}
}

int
match(uint mask, uint state)
{
	return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
}

char*
kmap(KeySym k, uint state)
{
	Key *kp;
	int i;

	/* Check for mapped keys out of X11 function keys. */
	for (i = 0; i < LEN(mappedkeys); i++) {
		if (mappedkeys[i] == k)
			break;
	}
	if (i == LEN(mappedkeys)) {
		if ((k & 0xFFFF) < 0xFD00)
			return NULL;
	}

	for (kp = key; kp < key + LEN(key); kp++) {
		if (kp->k != k)
			continue;

		if (!match(kp->mask, state))
			continue;

		if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
			continue;
		if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
			continue;

		if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
			continue;

		return kp->s;
	}

	return NULL;
}

void
kpress(XEvent *ev)
{
	XKeyEvent *e = &ev->xkey;
	KeySym ksym;
	char buf[32], *customkey;
	int len;
	Rune c;
	Status status;
	Shortcut *bp;

	if (xw.pointerisvisible) {
		XDefineCursor(xw.dpy, xw.win, xw.bpointer);
		xsetpointermotion(1);
		xw.pointerisvisible = 0;
	}

	if (IS_SET(MODE_KBDLOCK))
		return;

	len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
	/* 1. shortcuts */
	for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
		if (ksym == bp->keysym && match(bp->mod, e->state)) {
			bp->func(&(bp->arg));
			return;
		}
	}

	/* 2. custom keys from config.h */
	if ((customkey = kmap(ksym, e->state))) {
		ttywrite(customkey, strlen(customkey), 1);
		return;
	}

	/* 3. composed string from input method */
	if (len == 0)
		return;
	if (len == 1 && e->state & Mod1Mask) {
		if (IS_SET(MODE_8BIT)) {
			if (*buf < 0177) {
				c = *buf | 0x80;
				len = utf8encode(c, buf);
			}
		} else {
			buf[1] = buf[0];
			buf[0] = '\033';
			len = 2;
		}
	}
	ttywrite(buf, len, 1);
}


void
cmessage(XEvent *e)
{
	/*
	 * See xembed specs
	 *  http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
	 */
	if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
		if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
			win.mode |= MODE_FOCUSED;
			xseturgency(0);
		} else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
			win.mode &= ~MODE_FOCUSED;
		}
	} else if (e->xclient.data.l[0] == xw.wmdeletewin) {
		ttyhangup();
		exit(0);
	}
}

void
resize(XEvent *e)
{
	if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
		return;

	cresize(e->xconfigure.width, e->xconfigure.height);
}

void
run(void)
{
	XEvent ev;
	int w = win.w, h = win.h;
	fd_set rfd;
	int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
	int ttyfd;
	struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
	long deltatime;

	/* Waiting for window mapping */
	do {
		XNextEvent(xw.dpy, &ev);
		/*
		 * This XFilterEvent call is required because of XOpenIM. It
		 * does filter out the key event and some client message for
		 * the input method too.
		 */
		if (XFilterEvent(&ev, None))
			continue;
		if (ev.type == ConfigureNotify) {
			w = ev.xconfigure.width;
			h = ev.xconfigure.height;
		}
	} while (ev.type != MapNotify);

	ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
	cresize(w, h);

	clock_gettime(CLOCK_MONOTONIC, &last);
	lastblink = last;

	for (xev = actionfps;;) {
		FD_ZERO(&rfd);
		FD_SET(ttyfd, &rfd);
		FD_SET(xfd, &rfd);

		if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
			if (errno == EINTR)
				continue;
			die("select failed: %s\n", strerror(errno));
		}
		if (FD_ISSET(ttyfd, &rfd)) {
			ttyread();
			if (blinktimeout) {
				blinkset = tattrset(ATTR_BLINK);
				if (!blinkset)
					MODBIT(win.mode, 0, MODE_BLINK);
			}
		}

		if (FD_ISSET(xfd, &rfd))
			xev = actionfps;

		clock_gettime(CLOCK_MONOTONIC, &now);
		drawtimeout.tv_sec = 0;
		drawtimeout.tv_nsec =  (1000 * 1E6)/ xfps;
		tv = &drawtimeout;

		dodraw = 0;
		if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
			tsetdirtattr(ATTR_BLINK);
			win.mode ^= MODE_BLINK;
			lastblink = now;
			dodraw = 1;
		}
		deltatime = TIMEDIFF(now, last);
		if (deltatime > 1000 / (xev ? xfps : actionfps)) {
			dodraw = 1;
			last = now;
		}

		if (dodraw) {
			while (XPending(xw.dpy)) {
				XNextEvent(xw.dpy, &ev);
				if (XFilterEvent(&ev, None))
					continue;
				if (handler[ev.type])
					(handler[ev.type])(&ev);
			}

			draw();
			XFlush(xw.dpy);

			if (xev && !FD_ISSET(xfd, &rfd))
				xev--;
			if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
				if (blinkset) {
					if (TIMEDIFF(now, lastblink) \
							> blinktimeout) {
						drawtimeout.tv_nsec = 1000;
					} else {
						drawtimeout.tv_nsec = (1E6 * \
							(blinktimeout - \
							TIMEDIFF(now,
								lastblink)));
					}
					drawtimeout.tv_sec = \
					    drawtimeout.tv_nsec / 1E9;
					drawtimeout.tv_nsec %= (long)1E9;
				} else {
					tv = NULL;
				}
			}
		}
	}
}

void
usage(void)
{
	die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
	    " [-n name] [-o file]\n"
	    "          [-T title] [-t title] [-w windowid]"
	    " [[-e] command [args ...]]\n"
	    "       %s [-aiv] [-c class] [-f font] [-g geometry]"
	    " [-n name] [-o file]\n"
	    "          [-T title] [-t title] [-w windowid] -l line"
	    " [stty_args ...]\n", argv0, argv0);
}

int
main(int argc, char *argv[])
{
	xw.l = xw.t = 0;
	xw.isfixed = False;
	win.cursor = cursorshape;

	ARGBEGIN {
	case 'a':
		allowaltscreen = 0;
		break;
	case 'c':
		opt_class = EARGF(usage());
		break;
	case 'e':
		if (argc > 0)
			--argc, ++argv;
		goto run;
	case 'f':
		opt_font = EARGF(usage());
		break;
	case 'g':
		xw.gm = XParseGeometry(EARGF(usage()),
				&xw.l, &xw.t, &cols, &rows);
		break;
	case 'i':
		xw.isfixed = 1;
		break;
	case 'o':
		opt_io = EARGF(usage());
		break;
	case 'l':
		opt_line = EARGF(usage());
		break;
	case 'n':
		opt_name = EARGF(usage());
		break;
	case 't':
	case 'T':
		opt_title = EARGF(usage());
		break;
	case 'w':
		opt_embed = EARGF(usage());
		break;
	case 'v':
		die("%s " VERSION "\n", argv0);
		break;
	default:
		usage();
	} ARGEND;

run:
	if (argc > 0) /* eat all remaining arguments */
		opt_cmd = argv;

	if (!opt_title)
		opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];

	setlocale(LC_CTYPE, "");
	XSetLocaleModifiers("");
	cols = MAX(cols, 1);
	rows = MAX(rows, 1);
	tnew(cols, rows);
	xinit(cols, rows);
	xsetenv();
	selinit();
	run();

	return 0;
}

seth · 2019-02-17 22:33:49

Because that's more like https://st.suckless.org/patches/alpha/s … e4cf1.diff - which btw. should not apply to the current git checkout of st.
Please try a clean checkout of the latest st and apply the 0.8.2 patch.

arglinug · 2019-02-18 00:08:32

Yeah realized pacman installs a version of st that hasn't been updated the last 2 times. I have no clue how any of the other patches were working in the first place. I'm going to install st 0.8.2 and give it a try.

EDIT:

Ok so lesson learned, always check what version pacman is going to install on your machine.

Last edited by arglinug (2019-02-18 19:33:00)

Arch Linux

#1 2019-02-16 20:14:33

xcompmgr/nouveau not allowing opacity change [SOLVED]

#2 2019-02-16 21:11:28

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#3 2019-02-16 21:39:33

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#4 2019-02-16 22:02:11

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#5 2019-02-16 22:16:37

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#6 2019-02-16 22:29:33

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#7 2019-02-16 22:52:08

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#8 2019-02-17 07:14:46

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#9 2019-02-17 18:55:36

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#10 2019-02-17 20:15:50

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#11 2019-02-17 22:16:07

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#12 2019-02-17 22:33:49

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

#13 2019-02-18 00:08:32

Re: xcompmgr/nouveau not allowing opacity change [SOLVED]

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