diff options
Diffstat (limited to 'usr.bin')
| -rw-r--r-- | usr.bin/grep/util.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/usr.bin/grep/util.c b/usr.bin/grep/util.c index 8815d4f34227..dd9a753aac4e 100644 --- a/usr.bin/grep/util.c +++ b/usr.bin/grep/util.c @@ -305,6 +305,7 @@ procline(struct str *l, int nottext) unsigned int i; int c = 0, m = 0, r = 0, lastmatches = 0, leflags = eflags; int startm = 0; + int retry; /* Initialize to avoid a false positive warning from GCC. */ lastmatch.rm_so = lastmatch.rm_eo = 0; @@ -313,6 +314,7 @@ procline(struct str *l, int nottext) while (st <= l->len) { lastmatches = 0; startm = m; + retry = 0; if (st > 0) leflags |= REG_NOTBOL; /* Loop to compare with all the patterns */ @@ -356,6 +358,17 @@ procline(struct str *l, int nottext) else if (iswword(wbegin) || iswword(wend)) r = REG_NOMATCH; + /* + * If we're doing whole word matching and we + * matched once, then we should try the pattern + * again after advancing just past the start of + * the earliest match. This allows the pattern + * to match later on in the line and possibly + * still match a whole word. + */ + if (r == REG_NOMATCH && + (retry == 0 || pmatch.rm_so + 1 < retry)) + retry = pmatch.rm_so + 1; } if (r == 0) { lastmatches++; @@ -385,9 +398,14 @@ procline(struct str *l, int nottext) } } - if (vflag) { - c = !c; - break; + /* + * Advance to just past the start of the earliest match, try + * again just in case we still have a chance to match later in + * the string. + */ + if (lastmatches == 0 && retry > 0) { + st = retry; + continue; } /* One pass if we are not recording matches */ @@ -410,6 +428,9 @@ procline(struct str *l, int nottext) } + if (vflag) + c = !c; + /* Count the matches if we have a match limit */ if (mflag) mcount -= c; |