bump version to 0.9.1

config.def.h: improve latency for the default configuration
set upper limit for REP escape sequence argument
2024-03-19 12:13:42 +01:00 · 2024-03-17 14:42:44 +01:00 · 2024-03-04 23:50:58 +01:00 · 2024-02-25 11:56:43 +01:00 · 2024-02-18 16:14:26 +01:00
3 changed files with 11 additions and 6 deletions
--- a/config.def.h
+++ b/config.def.h
@ -53,7 +53,7 @@ int allowwindowops = 0;
 * near minlatency, but it waits longer for slow updates to avoid partial draw.
 * low minlatency will tear/flicker more, as it can "detect" idle too early.
 */
-static double minlatency = 8;
+static double minlatency = 2;
 static double maxlatency = 33;

 /*
--- a/config.mk
+++ b/config.mk
@ -1,5 +1,5 @@
 # st version
-VERSION = 0.9
+VERSION = 0.9.1

 # Customize below to fit your system

--- a/st.c
+++ b/st.c
@ -86,8 +86,8 @@ enum escape_state {

 typedef struct {
 	Glyph attr; /* current char attributes */
-	int x;
-	int y;
+	int x; /* terminal column */
+	int y; /* terminal row */
 	char state;
 } TCursor;

@ -1643,7 +1643,7 @@ csihandle(void)
 			ttywrite(vtiden, strlen(vtiden), 0);
 		break;
 	case 'b': /* REP -- if last char is printable print it <n> more times */
-		DEFAULT(csiescseq.arg[0], 1);
+		LIMIT(csiescseq.arg[0], 1, 65535);
 		if (term.lastc)
 			while (csiescseq.arg[0]-- > 0)
 				tputc(term.lastc);
@ -1728,6 +1728,7 @@ csihandle(void)
 		}
 		break;
 	case 'S': /* SU -- Scroll <n> line up */
+		if (csiescseq.priv) break;
 		DEFAULT(csiescseq.arg[0], 1);
 		tscrollup(term.top, csiescseq.arg[0]);
 		break;
@ -2174,12 +2175,16 @@ tstrsequence(uchar c)
 void
 tcontrolcode(uchar ascii)
 {
+	size_t i;
+
 	switch (ascii) {
 	case '\t':   /* HT */
 		tputtab(1);
 		return;
 	case '\b':   /* BS */
-		tmoveto(term.c.x-1, term.c.y);
+		for (i = 1; term.c.x && term.line[term.c.y][term.c.x - i].u == 0; ++i)
+			;
+		tmoveto(term.c.x - i, term.c.y);
 		return;
 	case '\r':   /* CR */
 		tmoveto(0, term.c.y);
Author	SHA1	Message	Date
Hiltjo Posthuma	5ce9716281	bump version to 0.9.1	2024-03-19 12:13:42 +01:00
Hiltjo Posthuma	f20e169a20	config.def.h: improve latency for the default configuration	2024-03-17 14:42:44 +01:00
Tommi Hirvola	95f22c5305	set upper limit for REP escape sequence argument Previously, printf 'L\033[2147483647b' would call tputc('L') 2^31 times, making st unresponsive. This commit allows repeating the last character at most 65535 times in order to prevent freezing and DoS attacks.	2024-03-04 23:50:58 +01:00
Quentin Rameau	7473a8d1a5	Fix cursor move with wide glyphs st would always move back 1 column, even with wide glyhps (using more than a single column). The glyph rune is set on its first column, and the other ones are to 0, so loop until we detect the start of the previous glyph.	2024-02-25 11:56:43 +01:00
Tim Culverhouse	a3f7420310	csi: check for private marker in 'S' case The handler for 'S' final character does not check for a private marker. This can cause a conflict with a sequence called 'XTSMGRAPHICS' which also has an 'S' final character, but uses the private marker '?'. Without checking for a private marker, st will perform a scroll up operation when XTSMGRAPHICS is seen, which can cause unexpected display artifacts.	2024-02-18 16:14:26 +01:00