awk: put at least one NUL between $n. Hopefully closes 337.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/editors/awk.c b/editors/awk.c
index 924cfcfab..cef73342c 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -1571,13 +1571,14 @@ static int awk_split(const char *s, node *spl, char **slist)
                                 n++; /* we saw yet another delimiter */
                         } else {
                                 pmatch[0].rm_eo = l;
-                                if (s[l]) pmatch[0].rm_eo++;
+                                if (s[l])
+                                        pmatch[0].rm_eo++;
                         }
                         memcpy(s1, s, l);
                         /* make sure we remove *all* of the separator chars */
-                        while (l < pmatch[0].rm_eo) {
-                                s1[l++] = '\0';
-                        }
+                        do {
+                                s1[l] = '\0';
+                        } while (++l < pmatch[0].rm_eo);
                         nextword(&s1);
                         s += pmatch[0].rm_eo;
                 } while (*s);