Revert "Apply appsync patch"

This reverts commit ae19d30bab16589623aa80ba316288d234e7fee9.

1 files changed, 0 insertions, 259 deletions

diff --git a/patches/st-appsync-20200618-b27a383.diff b/patches/st-appsync-20200618-b27a383.diff
deleted file mode 100644
index 4736325..0000000
--- a/patches/st-appsync-20200618-b27a383.diff
+++ /dev/null
@@ -1,259 +0,0 @@
-From 8c9c920325fa10440a96736ba58ec647a0365e22 Mon Sep 17 00:00:00 2001
-From: "Avi Halachmi (:avih)" <avihpit@yahoo.com>
-Date: Sat, 18 Apr 2020 13:56:11 +0300
-Subject: [PATCH] application-sync: support Synchronized-Updates
-
-See https://gitlab.com/gnachman/iterm2/-/wikis/synchronized-updates-spec
-
-In a nutshell: allow an application to suspend drawing until it has
-completed some output - so that the terminal will not flicker/tear by
-rendering partial content. If the end-of-suspension sequence doesn't
-arrive, the terminal bails out after a timeout (default: 200 ms).
-
-The feature is supported and pioneered by iTerm2. There are probably
-very few other terminals or applications which support this feature
-currently.
-
-One notable application which does support it is tmux (master as of
-2020-04-18) - where cursor flicker is completely avoided when a pane
-has new content. E.g. run in one pane: `while :; do cat x.c; done'
-while the cursor is at another pane.
-
-The terminfo string `Sync' added to `st.info' is also a tmux extension
-which tmux detects automatically when `st.info` is installed.
-
-Notes:
-
-- Draw-suspension begins on BSU sequence (Begin-Synchronized-Update),
-  and ends on ESU sequence (End-Synchronized-Update).
-
-- BSU, ESU are "\033P=1s\033\\", "\033P=2s\033\\" respectively (DCS).
-
-- SU doesn't support nesting - BSU begins or extends, ESU always ends.
-
-- ESU without BSU is ignored.
-
-- BSU after BSU extends (resets the timeout), so an application could
-  send BSU in a loop and keep drawing suspended - exactly like it can
-  not-draw anything in a loop. But as soon as it exits/aborted then
-  drawing is resumed according to the timeout even without ESU.
-
-- This implementation focuses on ESU and doesn't really care about BSU
-  in the sense that it tries hard to draw exactly once ESU arrives (if
-  it's not too soon after the last draw - according to minlatency),
-  and doesn't try to draw the content just up-to BSU. These two sides
-  complement eachother - not-drawing on BSU increases the chance that
-  ESU is not too soon after the last draw. This approach was chosen
-  because the application's main focus is that ESU indicates to the
-  terminal that the content is now ready - and that's when we try to
-  draw.
----
- config.def.h |  6 ++++++
- st.c         | 48 ++++++++++++++++++++++++++++++++++++++++++++++--
- st.info      |  1 +
- x.c          | 22 +++++++++++++++++++---
- 4 files changed, 72 insertions(+), 5 deletions(-)
-
-diff --git a/config.def.h b/config.def.h
-index 6f05dce..80d768e 100644
---- a/config.def.h
-+++ b/config.def.h
-@@ -56,6 +56,12 @@ 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.
-diff --git a/st.c b/st.c
-index 76b7e0d..0582e77 100644
---- a/st.c
-+++ b/st.c
-@@ -231,6 +231,33 @@ 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};
- 
-+#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)
- {
-@@ -818,6 +845,9 @@ ttynew(char *line, char *cmd, char *out, char **args)
- 	return cmdfd;
- }
- 
-+static int twrite_aborted = 0;
-+int ttyread_pending() { return twrite_aborted; }
-+
- size_t
- ttyread(void)
- {
-@@ -826,7 +856,7 @@ ttyread(void)
- 	int ret, written;
- 
- 	/* append read bytes to unprocessed bytes */
--	ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
-+	ret = twrite_aborted ? 1 : read(cmdfd, buf+buflen, LEN(buf)-buflen);
- 
- 	switch (ret) {
- 	case 0:
-@@ -834,7 +864,7 @@ ttyread(void)
- 	case -1:
- 		die("couldn't read from shell: %s\n", strerror(errno));
- 	default:
--		buflen += ret;
-+		buflen += twrite_aborted ? 0 : ret;
- 		written = twrite(buf, buflen, 0);
- 		buflen -= written;
- 		/* keep any incomplete UTF-8 byte sequence for the next call */
-@@ -994,6 +1024,7 @@ tsetdirtattr(int attr)
- void
- tfulldirt(void)
- {
-+	tsync_end();
- 	tsetdirt(0, term.row-1);
- }
- 
-@@ -1895,6 +1926,12 @@ strhandle(void)
- 		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;
-@@ -2436,6 +2473,9 @@ 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 */
-@@ -2446,6 +2486,10 @@ 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;
-diff --git a/st.info b/st.info
-index 8201ad6..b32b446 100644
---- a/st.info
-+++ b/st.info
-@@ -191,6 +191,7 @@ 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,
-diff --git a/x.c b/x.c
-index 210f184..27ff4e2 100644
---- a/x.c
-+++ b/x.c
-@@ -1861,6 +1861,9 @@ resize(XEvent *e)
- 	cresize(e->xconfigure.width, e->xconfigure.height);
- }
- 
-+int tinsync(uint);
-+int ttyread_pending();
-+
- void
- run(void)
- {
-@@ -1895,7 +1898,7 @@ run(void)
- 		FD_SET(ttyfd, &rfd);
- 		FD_SET(xfd, &rfd);
- 
--		if (XPending(xw.dpy))
-+		if (XPending(xw.dpy) || ttyread_pending())
- 			timeout = 0;  /* existing events might not set xfd */
- 
- 		seltv.tv_sec = timeout / 1E3;
-@@ -1909,7 +1912,8 @@ run(void)
- 		}
- 		clock_gettime(CLOCK_MONOTONIC, &now);
- 
--		if (FD_ISSET(ttyfd, &rfd))
-+		int ttyin = FD_ISSET(ttyfd, &rfd) || ttyread_pending();
-+		if (ttyin)
- 			ttyread();
- 
- 		xev = 0;
-@@ -1933,7 +1937,7 @@ run(void)
- 		 * maximum latency intervals during `cat huge.txt`, and perfect
- 		 * sync with periodic updates from animations/key-repeats/etc.
- 		 */
--		if (FD_ISSET(ttyfd, &rfd) || xev) {
-+		if (ttyin || xev) {
- 			if (!drawing) {
- 				trigger = now;
- 				drawing = 1;
-@@ -1944,6 +1948,18 @@ 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)) {
-
-base-commit: b27a383a3acc7decf00e6e889fca265430b5d329
--- 
-2.17.1
-