interpret_branch_name: rename "cp" variable to "at"

In the original version of this function, "cp" acted as a
pointer to many different things. Since the refactoring in
the last patch, it only marks the at-sign in the string.
Let's use a more descriptive variable name.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/sha1_name.c b/sha1_name.c
index 03c574e29599cfea0fac944038f4545e29517ce4..47a71e310e917244ce8adcff0b61a042315a7754 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -1119,7 +1119,7 @@ static int interpret_upstream_mark(const char *name, int namelen,
  */
 int interpret_branch_name(const char *name, int namelen, struct strbuf *buf)
 {
-       char *cp;
+       char *at;
        int len = interpret_nth_prior_checkout(name, buf);
 
        if (!namelen)
@@ -1134,15 +1134,15 @@ int interpret_branch_name(const char *name, int namelen, struct strbuf *buf)
                        return reinterpret(name, namelen, len, buf);
        }
 
-       cp = strchr(name, '@');
-       if (!cp)
+       at = strchr(name, '@');
+       if (!at)
                return -1;
 
-       len = interpret_empty_at(name, namelen, cp - name, buf);
+       len = interpret_empty_at(name, namelen, at - name, buf);
        if (len > 0)
                return reinterpret(name, namelen, len, buf);
 
-       len = interpret_upstream_mark(name, namelen, cp - name, buf);
+       len = interpret_upstream_mark(name, namelen, at - name, buf);
        if (len > 0)
                return len;