filter file: Don't ignore lines with leading whitespace (#239)

The new code skips leading whitespaces before removing trailing
whitespaces and comments.
Without doing this, lines with leading whitespace are treated like empty
lines (i.e. they are ignored).

1 files changed, 8 insertions, 7 deletions

diff --git a/src/filter.c b/src/filter.c
index 3164191..e18132e 100644
--- a/src/filter.c
+++ b/src/filter.c
@@ -52,7 +52,7 @@ void filter_init (void)
         FILE *fd;
         struct filter_list *p;
         char buf[FILTER_BUFFER_LEN];
-        char *s;
+        char *s, *start;
         int cflags;
 
         if (fl || already_init) {
@@ -73,11 +73,16 @@ void filter_init (void)
                 cflags |= REG_ICASE;
 
         while (fgets (buf, FILTER_BUFFER_LEN, fd)) {
+                /* skip leading whitespace */
+                s = buf;
+                while (*s && isspace ((unsigned char) *s))
+                        s++;
+                start = s;
+
                 /*
                  * Remove any trailing white space and
                  * comments.
                  */
-                s = buf;
                 while (*s) {
                         if (isspace ((unsigned char) *s))
                                 break;
@@ -93,11 +98,7 @@ void filter_init (void)
                         ++s;
                 }
                 *s = '\0';
-
-                /* skip leading whitespace */
-                s = buf;
-                while (*s && isspace ((unsigned char) *s))
-                        s++;
+                s = start;
 
                 /* skip blank lines and comments */
                 if (*s == '\0')