* mdocml: Slightly improve \w width measurements: Count special characters
@ 2015-01-22 22:52 schwarze
0 siblings, 0 replies; only message in thread
From: schwarze @ 2015-01-22 22:52 UTC (permalink / raw)
To: source
Log Message:
-----------
Slightly improve \w width measurements:
Count special characters with the same width as ASCII characters
and treat all other escape sequences as if they had a width of 0.
Certainly not perfect, but a bit better.
For example, GNU RCS ci(1) needs this; reported by naddy@.
Modified Files:
--------------
mdocml:
roff.c
Revision Data
-------------
Index: roff.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/roff.c,v
retrieving revision 1.252
retrieving revision 1.253
diff -Lroff.c -Lroff.c -u -p -r1.252 -r1.253
--- roff.c
+++ roff.c
@@ -1004,8 +1004,9 @@ roff_res(struct roff *r, struct buf *buf
/* Advance to the end of the name. */
+ naml = 0;
arg_complete = 1;
- for (naml = 0; maxl == 0 || naml < maxl; naml++, cp++) {
+ while (maxl == 0 || naml < maxl) {
if (*cp == '\0') {
mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
ln, (int)(stesc - buf->buf), stesc);
@@ -1014,6 +1015,23 @@ roff_res(struct roff *r, struct buf *buf
}
if (maxl == 0 && *cp == term) {
cp++;
+ break;
+ }
+ if (*cp++ != '\\' || stesc[1] != 'w') {
+ naml++;
+ continue;
+ }
+ switch (mandoc_escape(&cp, NULL, NULL)) {
+ case ESCAPE_SPECIAL:
+ /* FALLTHROUGH */
+ case ESCAPE_UNICODE:
+ /* FALLTHROUGH */
+ case ESCAPE_NUMBERED:
+ /* FALLTHROUGH */
+ case ESCAPE_OVERSTRIKE:
+ naml++;
+ break;
+ default:
break;
}
}
--
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