* mdocml: Drop leading, internal, and trailing blank characters in \o
@ 2015-08-30 21:11 schwarze
0 siblings, 0 replies; only message in thread
From: schwarze @ 2015-08-30 21:11 UTC (permalink / raw)
To: source
Log Message:
-----------
Drop leading, internal, and trailing blank characters in \o (overstrike)
escape sequences; that's cleaner for all output modes, and it's required
to prevent the PostScript/PDF formatter from dying on assertions.
Bug found by jsg@ with afl.
Modified Files:
--------------
mdocml:
term.c
Revision Data
-------------
Index: term.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/term.c,v
retrieving revision 1.248
retrieving revision 1.249
diff -Lterm.c -Lterm.c -u -p -r1.248 -r1.249
--- term.c
+++ term.c
@@ -499,6 +499,9 @@ term_word(struct termp *p, const char *w
p->flags |= TERMP_BACKBEFORE;
}
}
+ /* Trim trailing backspace/blank pair. */
+ if (p->col > 2 && p->buf[p->col - 1] == ' ')
+ p->col -= 2;
continue;
default:
continue;
@@ -561,7 +564,10 @@ encode1(struct termp *p, int c)
p->fontq[p->fonti] : TERMFONT_NONE;
if (p->flags & TERMP_BACKBEFORE) {
- p->buf[p->col++] = 8;
+ if (p->buf[p->col - 1] == ' ')
+ p->col--;
+ else
+ p->buf[p->col++] = 8;
p->flags &= ~TERMP_BACKBEFORE;
}
if (TERMFONT_UNDER == f || TERMFONT_BI == f) {
--
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2015-08-30 21:11 mdocml: Drop leading, internal, and trailing blank characters in \o schwarze
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