Re: Bug? in complist when filenames are longer than the screen

[Bart Schaefer <schaefer@brasslantern.com>]

On Oct 3,  8:48pm, DervishD wrote:
}
}     The above, when run after "zsh -f" and making sure you don't have
} any /etc/zshenv not protected by "[[ -o rcs ]]", causes a hangup (not
} a crash) in my system. Unfortunately the crash happens randomly

See if the following patch reduces the problem to something reproducible.
I don't really know what the problem is, but all of the following are
defensive changes against possible infinite loops.

Index: Src/Zle/complist.c
--- current/Src/Zle/complist.c	Sun Oct  2 18:38:17 2005
+++ Src/Zle/complist.c	Mon Oct  3 19:02:17 2005
@@ -831,7 +831,7 @@
     selectlocalmap(NULL);
     settyinfo(&shttyinfo);
     putc('\r', shout);
-    for (i = columns - 1; i--; )
+    for (i = columns - 1; i-- > 0; )
 	putc(' ', shout);
     putc('\r', shout);
 
@@ -1148,7 +1148,7 @@
 		    if (mselect >= 0) {
 			int mm = (mcols * ml), i;
 
-			for (i = mcols; i--; ) {
+			for (i = mcols; i-- > 0; ) {
 			    mtab[mm + i] = mtmark(NULL);
 			    mgtab[mm + i] = mgmark(NULL);
 			}
@@ -1469,12 +1469,12 @@
 	    int mm = (mcols * ml), i;
 
             if (m->flags & CMF_DUMMY) {
-                for (i = mcols; i--; ) {
+                for (i = mcols; i-- > 0; ) {
                     mtab[mm + i] = mtmark(mp);
                     mgtab[mm + i] = mgmark(g);
                 }
             } else {
-                for (i = mcols; i--; ) {
+                for (i = mcols; i-- > 0; ) {
                     mtab[mm + i] = mp;
                     mgtab[mm + i] = g;
                 }
@@ -1523,12 +1523,12 @@
 	    int mm = mcols * ml, i;
 
             if (m->flags & CMF_DUMMY) {
-                for (i = (width ? width : mcols); i--; ) {
+                for (i = (width ? width : mcols); i-- > 0; ) {
                     mtab[mx + mm + i] = mtmark(mp);
                     mgtab[mx + mm + i] = mgmark(g);
                 }
             } else {
-                for (i = (width ? width : mcols); i--; ) {
+                for (i = (width ? width : mcols); i-- > 0; ) {
                     mtab[mx + mm + i] = mp;
                     mgtab[mx + mm + i] = g;
                 }
@@ -2142,7 +2142,7 @@
 	    Cmatch **p = mtab;
 
 	    for (y = 0; y < mlines; y++) {
-		for (x = mcols; x; x--, p++)
+		for (x = mcols; x > 0; x--, p++)
 		    if (*p && !mmarked(*p) && **p && mselect == (**p)->gnum)
 			break;
 		if (x) {
@@ -2162,7 +2162,7 @@
 	    int c;
 
 	    while (mlbeg) {
-		for (q = p, c = columns; c; q++, c--)
+		for (q = p, c = columns; c > 0; q++, c--)
 		    if (*q && !mmarked(*q))
 			break;
 		if (c)
@@ -2180,7 +2180,7 @@
 	    int c;
 
 	    while (mlbeg < mlines) {
-		for (q = p, c = columns; c; q++, c--)
+		for (q = p, c = columns; c > 0; q++, c--)
 		    if (*q)
 			break;
 		if (c)