rerere: drop want_sp parameter from is_cmarker()

As the nature of the conflict marker line determines if there should
be a SP and label after it, the caller shouldn't have to pass the
parameter redundantly.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/rerere.c b/rerere.c
index 7fa58cc..2bce1c8 100644 (file)
--- a/rerere.c
+++ b/rerere.c
@@ -148,8 +148,25 @@ static int rerere_file_getline(struct strbuf *sb, struct rerere_io *io_)
        return strbuf_getwholeline(sb, io->input, '\n');
 }
 
-static int is_cmarker(char *buf, int marker_char, int marker_size, int want_sp)
+/*
+ * Require the exact number of conflict marker letters, no more, no
+ * less, followed by SP or any whitespace
+ * (including LF).
+ */
+static int is_cmarker(char *buf, int marker_char, int marker_size)
 {
+       int want_sp;
+
+       /*
+        * The beginning of our version and the end of their version
+        * always are labeled like "<<<<< ours" or ">>>>> theirs",
+        * hence we set want_sp for them.  Note that the version from
+        * the common ancestor in diff3-style output is not always
+        * labelled (e.g. "||||| common" is often seen but "|||||"
+        * alone is also valid), so we do not set want_sp.
+        */
+       want_sp = (marker_char == '<') || (marker_char == '>');
+
        while (marker_size--)
                if (*buf++ != marker_char)
                        return 0;
@@ -172,19 +189,19 @@ static int handle_path(unsigned char *sha1, struct rerere_io *io, int marker_siz
                git_SHA1_Init(&ctx);
 
        while (!io->getline(&buf, io)) {
-               if (is_cmarker(buf.buf, '<', marker_size, 1)) {
+               if (is_cmarker(buf.buf, '<', marker_size)) {
                        if (hunk != RR_CONTEXT)
                                goto bad;
                        hunk = RR_SIDE_1;
-               } else if (is_cmarker(buf.buf, '|', marker_size, 0)) {
+               } else if (is_cmarker(buf.buf, '|', marker_size)) {
                        if (hunk != RR_SIDE_1)
                                goto bad;
                        hunk = RR_ORIGINAL;
-               } else if (is_cmarker(buf.buf, '=', marker_size, 0)) {
+               } else if (is_cmarker(buf.buf, '=', marker_size)) {
                        if (hunk != RR_SIDE_1 && hunk != RR_ORIGINAL)
                                goto bad;
                        hunk = RR_SIDE_2;
-               } else if (is_cmarker(buf.buf, '>', marker_size, 1)) {
+               } else if (is_cmarker(buf.buf, '>', marker_size)) {
                        if (hunk != RR_SIDE_2)
                                goto bad;
                        if (strbuf_cmp(&one, &two) > 0)