fix a grep bug

2019-09-05 16:50:55 -04:00 · 2019-09-05 16:50:55 -04:00 · fc337af2b6
parent c0beeccb1b
commit fc337af2b6
1 changed files with 0 additions and 2 deletions
--- a/user/grep.c
+++ b/user/grep.c
@ -26,8 +26,6 @@ grep(char *pattern, int fd)
      }
      p = q+1;
    }
-    if(p == buf)
-      m = 0;
    if(m > 0){
      m -= p - buf;
      memmove(buf, p, m);