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- Fix handling of environmental variables when they are set to empty string

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Submitted by:	ttsestt@gmail.com
Approved by:	re (kib), delphij (mentor)
This commit is contained in:
Gabor Kovesdan 2011-08-17 13:56:33 +00:00
parent a6bab2362e
commit dab19f3084
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=224937
1 changed files with 4 additions and 3 deletions
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7
usr.bin/grep/grep.c
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@ -304,7 +304,7 @@ init_color(const char *d)
char *c;
c = getenv("GREP_COLOR");
return (c != NULL ? c : d);
return (c != NULL && c[0] != '\0' ? c : d);
}
int
@ -360,7 +360,7 @@ main(int argc, char *argv[])
/* support for extra arguments in GREP_OPTIONS */
eargc = 0;
if (eopts != NULL) {
if (eopts != NULL && eopts[0] != '\0') {
char *str;
/* make an estimation of how many extra arguments we have */
@ -373,7 +373,8 @@ main(int argc, char *argv[])
eargc = 0;
/* parse extra arguments */
while ((str = strsep(&eopts, " ")) != NULL)
eargv[eargc++] = grep_strdup(str);
if (str[0] != '\0')
eargv[eargc++] = grep_strdup(str);
aargv = (char **)grep_calloc(eargc + argc + 1,
sizeof(char *));