diff options
| author | Ingo Schwarze <schwarze@cvs.openbsd.org> | 2015-01-22 22:50:32 +0000 |
|---|---|---|
| committer | Ingo Schwarze <schwarze@cvs.openbsd.org> | 2015-01-22 22:50:32 +0000 |
| commit | dc19c117010d5d4662c8bfc46e13f2ba350efa92 (patch) | |
| tree | 08e7e1fd24a758c90f3cba7bc799f2ac3903c138 /usr.bin/mandoc/roff.c | |
| parent | 5d93423f0c620f4b2aec4599a450a33d687b9395 (diff) | |
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@.
Diffstat (limited to 'usr.bin/mandoc/roff.c')
| -rw-r--r-- | usr.bin/mandoc/roff.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/usr.bin/mandoc/roff.c b/usr.bin/mandoc/roff.c index 75f45c490c2..6e38f63443c 100644 --- a/usr.bin/mandoc/roff.c +++ b/usr.bin/mandoc/roff.c @@ -1,4 +1,4 @@ -/* $OpenBSD: roff.c,v 1.124 2015/01/21 02:16:11 schwarze Exp $ */ +/* $OpenBSD: roff.c,v 1.125 2015/01/22 22:50:31 schwarze Exp $ */ /* * Copyright (c) 2010, 2011, 2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv> * Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org> @@ -1002,8 +1002,9 @@ roff_res(struct roff *r, struct buf *buf, int ln, int pos) /* 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, int ln, int pos) 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; + } } /* |