builtin-grep: workaround for non GNU grep.

diff --git a/stripspace.c b/stripspace.c
index 96cd0a88f0ba0c06da81d4cdb83a482d82ecdd23..65a6346452bb924d203724a9bfeb1c4ed98025e1 100644 (file)
--- a/stripspace.c
+++ b/stripspace.c
@@ -6,13 +6,15 @@
  * Remove empty lines from the beginning and end.
  *
  * Turn multiple consecutive empty lines into just one
- * empty line.
+ * empty line.  Return true if it is an incomplete line.
  */
-static void cleanup(char *line)
+static int cleanup(char *line)
 {
        int len = strlen(line);
 
-       if (len > 1 && line[len-1] == '\n') {
+       if (len && line[len-1] == '\n') {
+               if (len == 1)
+                       return 0;
                do {
                        unsigned char c = line[len-2];
                        if (!isspace(c))
@@ -21,16 +23,19 @@ static void cleanup(char *line)
                        len--;
                        line[len] = 0;
                } while (len > 1);
+               return 0;
        }
+       return 1;
 }
 
 int main(int argc, char **argv)
 {
        int empties = -1;
+       int incomplete = 0;
        char line[1024];
 
        while (fgets(line, sizeof(line), stdin)) {
-               cleanup(line);
+               incomplete = cleanup(line);
 
                /* Not just an empty line? */
                if (line[0] != '\n') {
@@ -44,5 +49,7 @@ int main(int argc, char **argv)
                        continue;
                empties++;
        }
+       if (incomplete)
+               putchar('\n');
        return 0;
 }