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-rw-r--r--libbb/skip_whitespace.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/libbb/skip_whitespace.c b/libbb/skip_whitespace.c
index e85f3859f..7b123261b 100644
--- a/libbb/skip_whitespace.c
+++ b/libbb/skip_whitespace.c
@@ -11,15 +11,22 @@
char* FAST_FUNC skip_whitespace(const char *s)
{
- /* NB: isspace('\0') returns 0 */
- while (isspace(*s)) ++s;
+ /* In POSIX/C locale (the only locale we care about: do we REALLY want
+ * to allow Unicode whitespace in, say, .conf files? nuts!)
+ * isspace is only these chars: "\t\n\v\f\r" and space.
+ * "\t\n\v\f\r" happen to have ASCII codes 9,10,11,12,13.
+ * Use that.
+ */
+ while (*s == ' ' || (unsigned char)(*s - 9) <= (13 - 9))
+ s++;
return (char *) s;
}
char* FAST_FUNC skip_non_whitespace(const char *s)
{
- while (*s && !isspace(*s)) ++s;
+ while (*s != '\0' && *s != ' ' && (unsigned char)(*s - 9) > (13 - 9))
+ s++;
return (char *) s;
}