From f5afac834b03d5ee46adec982095852609b1b58c Mon Sep 17 00:00:00 2001
From: Iain Patterson <me@iain.cx>
Date: Sat, 16 Apr 2011 12:43:00 +0100
Subject: [PATCH 1/1] Override "p4 diff" to handle change numbers.

Wrapper around "p4 diff" which detects use of the -c flag and calls
p4-diffchange, thus enabling uses such as "p4 diff -c 12345" which will
show diffs only for files opened in changelist 12345.
---
 opt/p4/p4-diff | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100755 opt/p4/p4-diff

diff --git a/opt/p4/p4-diff b/opt/p4/p4-diff
new file mode 100755
index 0000000..2ecc0d5
--- /dev/null
+++ b/opt/p4/p4-diff
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+. ${0%/*}/common
+
+function parse_change() {
+  while getopts ":c:" opt; do
+    case $opt in
+      c) echo $OPTARG;;
+    esac
+  done
+}
+
+if [ -n "$(parse_change $*)" ]; then
+  exec ${0%/*}/p4-diffchange $p4opts diffchange ${1+"$@"}
+else
+  exec p4 $p4opts $p4command ${1+"$@"}
+fi
-- 
2.7.4