Added undercurl v0.8.4 patch

config.def.h

@@ -56,12 +56,6 @@ int allowwindowops = 0;
 static double minlatency = 8;
 static double maxlatency = 33;
 
-/*
- * Synchronized-Update timeout in ms
- * https://gitlab.com/gnachman/iterm2/-/wikis/synchronized-updates-spec
- */
-static uint su_timeout = 200;
-
 /*
  * blinking timeout (set to 0 to disable blinking) for the terminal blinking
  * attribute.
@@ -99,30 +93,35 @@ char *termname = "st-256color";
  */
 unsigned int tabspaces = 8;
 
-/* bg opacity */
-float alpha = 0.8;
-
 /* Terminal colors (16 first used in escape sequence) */
 static const char *colorname[] = {
 	/* 8 normal colors */
-	[0] = "#282828", /* hard contrast: #1d2021 / soft contrast: #32302f */
+	"black",
-	[1] = "#cc241d", /* red     */
+	"red3",
-	[2] = "#98971a", /* green   */
+	"green3",
-	[3] = "#d79921", /* yellow  */
+	"yellow3",
-	[4] = "#458588", /* blue    */
+	"blue2",
-	[5] = "#b16286", /* magenta */
+	"magenta3",
-	[6] = "#689d6a", /* cyan    */
+	"cyan3",
-	[7] = "#a89984", /* white   */
+	"gray90",
 
 	/* 8 bright colors */
-	[8]  = "#928374", /* black   */
+	"gray50",
-	[9]  = "#fb4934", /* red     */
+	"red",
-	[10] = "#b8bb26", /* green   */
+	"green",
-	[11] = "#fabd2f", /* yellow  */
+	"yellow",
-	[12] = "#83a598", /* blue    */
+	"#5c5cff",
-	[13] = "#d3869b", /* magenta */
+	"magenta",
-	[14] = "#8ec07c", /* cyan    */
+	"cyan",
-	[15] = "#ebdbb2", /* white   */
+	"white",
+
+	[255] = 0,
+
+	/* more colors can be added after 255 to use with DefaultXX */
+	"#cccccc",
+	"#555555",
+	"gray90", /* default foreground colour */
+	"black", /* default background colour */
 };
 
 
@@ -130,9 +129,9 @@ static const char *colorname[] = {
  * Default colors (colorname index)
  * foreground, background, cursor, reverse cursor
  */
-unsigned int defaultfg = 15;
+unsigned int defaultfg = 258;
-unsigned int defaultbg = 0;
+unsigned int defaultbg = 259;
-unsigned int defaultcs = 15;
+unsigned int defaultcs = 256;
 static unsigned int defaultrcs = 257;
 
 /*

config.mk

@@ -16,7 +16,7 @@ PKG_CONFIG = pkg-config
 INCS = -I$(X11INC) \
        `$(PKG_CONFIG) --cflags fontconfig` \
        `$(PKG_CONFIG) --cflags freetype2`
-LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft -lXrender\
+LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
        `$(PKG_CONFIG) --libs fontconfig` \
        `$(PKG_CONFIG) --libs freetype2`
 

st.c

@@ -43,8 +43,6 @@
 #define ISCONTROLC1(c)		(BETWEEN(c, 0x80, 0x9f))
 #define ISCONTROL(c)		(ISCONTROLC0(c) || ISCONTROLC1(c))
 #define ISDELIM(u)		(u && wcschr(worddelimiters, u))
-#define STRESCARGREST(n)	((n) == 0 ? strescseq.buf : strescseq.argp[(n)-1] + 1)
-#define STRESCARGJUST(n)	(*(strescseq.argp[n]) = '\0', STRESCARGREST(n))
 
 enum term_mode {
 	MODE_WRAP        = 1 << 0,
@@ -152,7 +150,7 @@ typedef struct {
 	char *buf;             /* allocated raw string */
 	size_t siz;            /* allocation size */
 	size_t len;            /* raw string length */
-	char *argp[STR_ARG_SIZ]; /* pointers to the end of nth argument */
+	char *args[STR_ARG_SIZ];
 	int narg;              /* nb of args */
 } STREscape;
 
@@ -237,33 +235,6 @@ static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
 static const Rune utfmin[UTF_SIZ + 1] = {       0,    0,  0x80,  0x800,  0x10000};
 static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
 
-#include <time.h>
-static int su = 0;
-struct timespec sutv;
-
-static void
-tsync_begin()
-{
-	clock_gettime(CLOCK_MONOTONIC, &sutv);
-	su = 1;
-}
-
-static void
-tsync_end()
-{
-	su = 0;
-}
-
-int
-tinsync(uint timeout)
-{
-	struct timespec now;
-	if (su && !clock_gettime(CLOCK_MONOTONIC, &now)
-	       && TIMEDIFF(now, sutv) >= timeout)
-		su = 0;
-	return su;
-}
-
 ssize_t
 xwrite(int fd, const char *s, size_t len)
 {
@@ -846,9 +817,6 @@ ttynew(const char *line, char *cmd, const char *out, char **args)
 	return cmdfd;
 }
 
-static int twrite_aborted = 0;
-int ttyread_pending() { return twrite_aborted; }
-
 size_t
 ttyread(void)
 {
@@ -857,7 +825,7 @@ ttyread(void)
 	int ret, written;
 
 	/* append read bytes to unprocessed bytes */
-	ret = twrite_aborted ? 1 : read(cmdfd, buf+buflen, LEN(buf)-buflen);
+	ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
 
 	switch (ret) {
 	case 0:
@@ -865,7 +833,7 @@ ttyread(void)
 	case -1:
 		die("couldn't read from shell: %s\n", strerror(errno));
 	default:
-		buflen += twrite_aborted ? 0 : ret;
+		buflen += ret;
 		written = twrite(buf, buflen, 0);
 		buflen -= written;
 		/* keep any incomplete UTF-8 byte sequence for the next call */
@@ -1025,7 +993,6 @@ tsetdirtattr(int attr)
 void
 tfulldirt(void)
 {
-	tsync_end();
 	tsetdirt(0, term.row-1);
 }
 
@@ -1961,30 +1928,29 @@ strhandle(void)
 	};
 
 	term.esc &= ~(ESC_STR_END|ESC_STR);
-	strescseq.buf[strescseq.len] = '\0';
+	strparse();
+	par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
 
 	switch (strescseq.type) {
 	case ']': /* OSC -- Operating System Command */
-		strparse();
-		par = (narg = strescseq.narg) ? atoi(STRESCARGJUST(0)) : 0;
 		switch (par) {
 		case 0:
 			if (narg > 1) {
-				xsettitle(STRESCARGREST(1));
+				xsettitle(strescseq.args[1]);
-				xseticontitle(STRESCARGREST(1));
+				xseticontitle(strescseq.args[1]);
 			}
 			return;
 		case 1:
 			if (narg > 1)
-				xseticontitle(STRESCARGREST(1));
+				xseticontitle(strescseq.args[1]);
 			return;
 		case 2:
 			if (narg > 1)
-				xsettitle(STRESCARGREST(1));
+				xsettitle(strescseq.args[1]);
 			return;
 		case 52:
 			if (narg > 2 && allowwindowops) {
-				dec = base64dec(STRESCARGJUST(2));
+				dec = base64dec(strescseq.args[2]);
 				if (dec) {
 					xsetsel(dec);
 					xclipcopy();
@@ -1998,7 +1964,7 @@ strhandle(void)
 		case 12:
 			if (narg < 2)
 				break;
-			p = STRESCARGREST(1);
+			p = strescseq.args[1];
 			if ((j = par - 10) < 0 || j >= LEN(osc_table))
 				break; /* shouldn't be possible */
 
@@ -2014,10 +1980,10 @@ strhandle(void)
 		case 4: /* color set */
 			if (narg < 3)
 				break;
-			p = STRESCARGJUST(2);
+			p = strescseq.args[2];
 			/* FALLTHROUGH */
 		case 104: /* color reset */
-			j = (narg > 1) ? atoi(STRESCARGJUST(1)) : -1;
+			j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
 
 			if (p && !strcmp(p, "?")) {
 				osc_color_response(j, 0, 1);
@@ -2039,15 +2005,9 @@ strhandle(void)
 		}
 		break;
 	case 'k': /* old title set compatibility */
-		xsettitle(strescseq.buf);
+		xsettitle(strescseq.args[0]);
 		return;
 	case 'P': /* DCS -- Device Control String */
-		/* https://gitlab.com/gnachman/iterm2/-/wikis/synchronized-updates-spec */
-		if (strstr(strescseq.buf, "=1s") == strescseq.buf)
-			tsync_begin();  /* BSU */
-		else if (strstr(strescseq.buf, "=2s") == strescseq.buf)
-			tsync_end();  /* ESU */
-		return;
 	case '_': /* APC -- Application Program Command */
 	case '^': /* PM -- Privacy Message */
 		return;
@@ -2064,17 +2024,18 @@ strparse(void)
 	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++;
+			++p;
-		strescseq.argp[strescseq.narg++] = p;
 		if (c == '\0')
 			return;
-		p++;
+		*p++ = '\0';
 	}
 }
 
@@ -2595,9 +2556,6 @@ twrite(const char *buf, int buflen, int show_ctrl)
 	Rune u;
 	int n;
 
-	int su0 = su;
-	twrite_aborted = 0;
-
 	for (n = 0; n < buflen; n += charsize) {
 		if (IS_SET(MODE_UTF8)) {
 			/* process a complete utf8 char */
@@ -2608,10 +2566,6 @@ twrite(const char *buf, int buflen, int show_ctrl)
 			u = buf[n] & 0xFF;
 			charsize = 1;
 		}
-		if (su0 && !su) {
-			twrite_aborted = 1;
-			break;  // ESU - allow rendering before a new BSU
-		}
 		if (show_ctrl && ISCONTROL(u)) {
 			if (u & 0x80) {
 				u &= 0x7f;

st.h

@@ -127,4 +127,3 @@ extern unsigned int tabspaces;
 extern unsigned int defaultfg;
 extern unsigned int defaultbg;
 extern unsigned int defaultcs;
-extern float alpha;

st.info

@@ -192,7 +192,6 @@ st-mono| simpleterm monocolor,
 	Ms=\E]52;%p1%s;%p2%s\007,
 	Se=\E[2 q,
 	Ss=\E[%p1%d q,
-	Sync=\EP=%p1%ds\E\\,
 
 st| simpleterm,
 	use=st-mono,

x.c

@@ -89,7 +89,6 @@ typedef XftGlyphFontSpec GlyphFontSpec;
 typedef struct {
 	int tw, th; /* tty width and height */
 	int w, h; /* window width and height */
-	int hborderpx, vborderpx;
 	int ch; /* char height */
 	int cw; /* char width  */
 	int mode; /* window state/mode flags */
@@ -114,7 +113,6 @@ typedef struct {
 	XSetWindowAttributes attrs;
 	int scr;
 	int isfixed; /* is fixed geometry? */
-	int depth; /* bit depth */
 	int l, t; /* left and top offset */
 	int gm; /* geometry mask */
 } XWindow;
@@ -253,7 +251,6 @@ static char *usedfont = NULL;
 static double usedfontsize = 0;
 static double defaultfontsize = 0;
 
-static char *opt_alpha = NULL;
 static char *opt_class = NULL;
 static char **opt_cmd  = NULL;
 static char *opt_embed = NULL;
@@ -342,7 +339,7 @@ ttysend(const Arg *arg)
 int
 evcol(XEvent *e)
 {
-	int x = e->xbutton.x - win.hborderpx;
+	int x = e->xbutton.x - borderpx;
 	LIMIT(x, 0, win.tw - 1);
 	return x / win.cw;
 }
@@ -350,7 +347,7 @@ evcol(XEvent *e)
 int
 evrow(XEvent *e)
 {
-	int y = e->xbutton.y - win.vborderpx;
+	int y = e->xbutton.y - borderpx;
 	LIMIT(y, 0, win.th - 1);
 	return y / win.ch;
 }
@@ -697,8 +694,6 @@ setsel(char *str, Time t)
 	XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
 	if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
 		selclear();
-
-	xclipcopy();
 }
 
 void
@@ -722,9 +717,7 @@ brelease(XEvent *e)
 
 	if (mouseaction(e, 1))
 		return;
-	if (btn == Button3)
+	if (btn == Button1)
-		selpaste(NULL);
-	else if (btn == Button1)
 		mousesel(e, 1);
 }
 
@@ -754,9 +747,6 @@ cresize(int width, int height)
 	col = MAX(1, col);
 	row = MAX(1, row);
 
-	win.hborderpx = (win.w - col * win.cw) / 2;
-	win.vborderpx = (win.h - row * win.ch) / 2;
-
 	tresize(col, row);
 	xresize(col, row);
 	ttyresize(win.tw, win.th);
@@ -770,7 +760,7 @@ xresize(int col, int row)
 
 	XFreePixmap(xw.dpy, xw.buf);
 	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
-			xw.depth);
+			DefaultDepth(xw.dpy, xw.scr));
 	XftDrawChange(xw.draw, xw.buf);
 	xclear(0, 0, win.w, win.h);
 
@@ -830,13 +820,6 @@ xloadcols(void)
 			else
 				die("could not allocate color %d\n", i);
 		}
-
-	/* set alpha value of bg color */
-	if (opt_alpha)
-		alpha = strtof(opt_alpha, NULL);
-	dc.col[defaultbg].color.alpha = (unsigned short)(0xffff * alpha);
-	dc.col[defaultbg].pixel &= 0x00FFFFFF;
-	dc.col[defaultbg].pixel |= (unsigned char)(0xff * alpha) << 24;
 	loaded = 1;
 }
 
@@ -894,8 +877,8 @@ xhints(void)
 	sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
 	sizeh->height = win.h;
 	sizeh->width = win.w;
-	sizeh->height_inc = 1;
+	sizeh->height_inc = win.ch;
-	sizeh->width_inc = 1;
+	sizeh->width_inc = win.cw;
 	sizeh->base_height = 2 * borderpx;
 	sizeh->base_width = 2 * borderpx;
 	sizeh->min_height = win.ch + 2 * borderpx;
@@ -1159,23 +1142,11 @@ xinit(int cols, int rows)
 	Window parent;
 	pid_t thispid = getpid();
 	XColor xmousefg, xmousebg;
-	XWindowAttributes attr;
-	XVisualInfo vis;
 
 	if (!(xw.dpy = XOpenDisplay(NULL)))
 		die("can't open display\n");
 	xw.scr = XDefaultScreen(xw.dpy);
-
+	xw.vis = XDefaultVisual(xw.dpy, xw.scr);
-	if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0)))) {
-		parent = XRootWindow(xw.dpy, xw.scr);
-		xw.depth = 32;
-	} else {
-		XGetWindowAttributes(xw.dpy, parent, &attr);
-		xw.depth = attr.depth;
-	}
-
-	XMatchVisualInfo(xw.dpy, xw.scr, xw.depth, TrueColor, &vis);
-	xw.vis = vis.visual;
 
 	/* font */
 	if (!FcInit())
@@ -1185,12 +1156,12 @@ xinit(int cols, int rows)
 	xloadfonts(usedfont, 0);
 
 	/* colors */
-	xw.cmap = XCreateColormap(xw.dpy, parent, xw.vis, None);
+	xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
 	xloadcols();
 
 	/* adjust fixed window geometry */
-	win.w = 2 * win.hborderpx + 2 * borderpx + cols * win.cw;
+	win.w = 2 * borderpx + cols * win.cw;
-	win.h = 2 * win.vborderpx + 2 * borderpx + rows * win.ch;
+	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)
@@ -1205,15 +1176,19 @@ xinit(int cols, int rows)
 		| 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,
+			win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), 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, parent, GCGraphicsExposures,
-	dc.gc = XCreateGC(xw.dpy, xw.buf, GCGraphicsExposures, &gcvalues);
+			&gcvalues);
+	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+			DefaultDepth(xw.dpy, xw.scr));
 	XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
 	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
 
@@ -1275,7 +1250,7 @@ xinit(int cols, int rows)
 int
 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
 {
-	float winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch, xp, yp;
+	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;
@@ -1453,7 +1428,7 @@ void
 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
 {
 	int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
-	int winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch,
+	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;
@@ -1490,6 +1465,10 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
 		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];
@@ -1539,17 +1518,17 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
 
 	/* Intelligent cleaning up of the borders. */
 	if (x == 0) {
-		xclear(0, (y == 0)? 0 : winy, win.hborderpx,
+		xclear(0, (y == 0)? 0 : winy, borderpx,
 			winy + win.ch +
-			((winy + win.ch >= win.vborderpx + win.th)? win.h : 0));
+			((winy + win.ch >= borderpx + win.th)? win.h : 0));
 	}
-	if (winx + width >= win.hborderpx + win.tw) {
+	if (winx + width >= borderpx + win.tw) {
 		xclear(winx + width, (y == 0)? 0 : winy, win.w,
-			((winy + win.ch >= win.vborderpx + win.th)? win.h : (winy + win.ch)));
+			((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
 	}
 	if (y == 0)
-		xclear(winx, 0, winx + width, win.vborderpx);
+		xclear(winx, 0, winx + width, borderpx);
-	if (winy + win.ch >= win.vborderpx + win.th)
+	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. */
@@ -1943,7 +1922,6 @@ void
 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
 {
 	Color drawcol;
-	XRenderColor colbg;
 
 	/* remove the old cursor */
 	if (selected(ox, oy))
@@ -1972,21 +1950,11 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
 		if (selected(cx, cy)) {
 			g.fg = defaultfg;
 			g.bg = defaultrcs;
-		} else if (!(og.mode & ATTR_REVERSE)) {
-			unsigned long col = g.bg;
-			g.bg = g.fg;
-			g.fg = col;
-		}
-
-		if (IS_TRUECOL(g.bg)) {
-			colbg.alpha = 0xffff;
-			colbg.red = TRUERED(g.bg);
-			colbg.green = TRUEGREEN(g.bg);
-			colbg.blue = TRUEBLUE(g.bg);
-			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &drawcol);
 		} else {
-			drawcol = dc.col[g.bg];
+			g.fg = defaultbg;
+			g.bg = defaultcs;
 		}
+		drawcol = dc.col[g.bg];
 	}
 
 	/* draw the new one */
@@ -2003,35 +1971,35 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
 		case 3: /* Blinking Underline */
 		case 4: /* Steady Underline */
 			XftDrawRect(xw.draw, &drawcol,
-					win.hborderpx + cx * win.cw,
+					borderpx + cx * win.cw,
-					win.vborderpx + (cy + 1) * win.ch - \
+					borderpx + (cy + 1) * win.ch - \
 						cursorthickness,
 					win.cw, cursorthickness);
 			break;
 		case 5: /* Blinking bar */
 		case 6: /* Steady bar */
 			XftDrawRect(xw.draw, &drawcol,
-					win.hborderpx + cx * win.cw,
+					borderpx + cx * win.cw,
-					win.vborderpx + cy * win.ch,
+					borderpx + cy * win.ch,
 					cursorthickness, win.ch);
 			break;
 		}
 	} else {
 		XftDrawRect(xw.draw, &drawcol,
-				win.hborderpx + cx * win.cw,
+				borderpx + cx * win.cw,
-				win.vborderpx + cy * win.ch,
+				borderpx + cy * win.ch,
 				win.cw - 1, 1);
 		XftDrawRect(xw.draw, &drawcol,
-				win.hborderpx + cx * win.cw,
+				borderpx + cx * win.cw,
-				win.vborderpx + cy * win.ch,
+				borderpx + cy * win.ch,
 				1, win.ch - 1);
 		XftDrawRect(xw.draw, &drawcol,
-				win.hborderpx + (cx + 1) * win.cw - 1,
+				borderpx + (cx + 1) * win.cw - 1,
-				win.vborderpx + cy * win.ch,
+				borderpx + cy * win.ch,
 				1, win.ch - 1);
 		XftDrawRect(xw.draw, &drawcol,
-				win.hborderpx + cx * win.cw,
+				borderpx + cx * win.cw,
-				win.vborderpx + (cy + 1) * win.ch - 1,
+				borderpx + (cy + 1) * win.ch - 1,
 				win.cw, 1);
 	}
 }
@@ -2345,9 +2313,6 @@ resize(XEvent *e)
 	cresize(e->xconfigure.width, e->xconfigure.height);
 }
 
-int tinsync(uint);
-int ttyread_pending();
-
 void
 run(void)
 {
@@ -2382,7 +2347,7 @@ run(void)
 		FD_SET(ttyfd, &rfd);
 		FD_SET(xfd, &rfd);
 
-		if (XPending(xw.dpy) || ttyread_pending())
+		if (XPending(xw.dpy))
 			timeout = 0;  /* existing events might not set xfd */
 
 		seltv.tv_sec = timeout / 1E3;
@@ -2396,8 +2361,7 @@ run(void)
 		}
 		clock_gettime(CLOCK_MONOTONIC, &now);
 
-		int ttyin = FD_ISSET(ttyfd, &rfd) || ttyread_pending();
+		if (FD_ISSET(ttyfd, &rfd))
-		if (ttyin)
 			ttyread();
 
 		xev = 0;
@@ -2421,7 +2385,7 @@ run(void)
 		 * maximum latency intervals during `cat huge.txt`, and perfect
 		 * sync with periodic updates from animations/key-repeats/etc.
 		 */
-		if (ttyin || xev) {
+		if (FD_ISSET(ttyfd, &rfd) || xev) {
 			if (!drawing) {
 				trigger = now;
 				drawing = 1;
@@ -2432,18 +2396,6 @@ run(void)
 				continue;  /* we have time, try to find idle */
 		}
 
-		if (tinsync(su_timeout)) {
-			/*
-			 * on synchronized-update draw-suspension: don't reset
-			 * drawing so that we draw ASAP once we can (just after
-			 * ESU). it won't be too soon because we already can
-			 * draw now but we skip. we set timeout > 0 to draw on
-			 * SU-timeout even without new content.
-			 */
-			timeout = minlatency;
-			continue;
-		}
-
 		/* idle detected or maxlatency exhausted -> draw */
 		timeout = -1;
 		if (blinktimeout && tattrset(ATTR_BLINK)) {
@@ -2488,9 +2440,6 @@ main(int argc, char *argv[])
 	case 'a':
 		allowaltscreen = 0;
 		break;
-	case 'A':
-		opt_alpha = EARGF(usage());
-		break;
 	case 'c':
 		opt_class = EARGF(usage());
 		break;