[PATCH 2/5] interpret_branch_name: rename "cp" variable to "at"

[Jeff King <peff@peff.net>]

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>
---
Obviously can be squashed with the prior refactoring, but I think
splitting it makes the diffs easier to read.

 sha1_name.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/sha1_name.c b/sha1_name.c
index 5db742b..958aa2e 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -1117,7 +1117,7 @@ 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)
@@ -1132,15 +1132,15 @@ 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;
 
-- 
1.8.5.2.500.g8060133