builtin-rerere: more carefully find conflict markers

diff --git a/builtin-rerere.c b/builtin-rerere.c
index 839b26e8e0a10a498a81bf27d907543e7c256cb8..69c3a52d5e98818dcd4407e75ae9cfff938710a6 100644 (file)
--- a/builtin-rerere.c
+++ b/builtin-rerere.c
@@ -112,11 +112,17 @@ static int handle_file(const char *path,
        strbuf_init(&one, 0);
        strbuf_init(&two,  0);
        while (fgets(buf, sizeof(buf), f)) {
-               if (!prefixcmp(buf, "<<<<<<< "))
+               if (!prefixcmp(buf, "<<<<<<< ")) {
+                       if (hunk)
+                               goto bad;
                        hunk = 1;
-               else if (!prefixcmp(buf, "======="))
+               } else if (!prefixcmp(buf, "=======") && isspace(buf[7])) {
+                       if (hunk != 1)
+                               goto bad;
                        hunk = 2;
-               else if (!prefixcmp(buf, ">>>>>>> ")) {
+               } else if (!prefixcmp(buf, ">>>>>>> ")) {
+                       if (hunk != 2)
+                               goto bad;
                        if (strbuf_cmp(&one, &two) > 0)
                                strbuf_swap(&one, &two);
                        hunk_no++;
@@ -142,6 +148,10 @@ static int handle_file(const char *path,
                        strbuf_addstr(&two, buf);
                else if (out)
                        fputs(buf, out);
+               continue;
+       bad:
+               hunk = 99; /* force error exit */
+               break;
        }
        strbuf_release(&one);
        strbuf_release(&two);