From bbb90adedd09ff672a6c3302023abeefd40b7f5f Mon Sep 17 00:00:00 2001
From: Simon Ruderich <simon@ruderich.org>
Date: Thu, 20 Dec 2012 21:39:06 +0100
Subject: [PATCH] shell/aliases: Use grep --color=auto if available.

---
 setup.sh         | 9 +++++++++
 shell/aliases.in | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/setup.sh b/setup.sh
index be42a6a..3a43c3a 100755
--- a/setup.sh
+++ b/setup.sh
@@ -102,6 +102,15 @@ generate perl shell/aliases \
         }' \
     "$ls_env" "$ls_path" "$ls_color"
 
+# Check if grep supports --color=auto.
+if echo test | grep --color=auto test >/dev/null 2>&1; then
+    :
+else
+    echo 'shell/aliases: removing grep --color=auto'
+    sed '/^alias grep=/ s/^/#/' shell/aliases > shell/aliases.tmp
+    mv shell/aliases.tmp shell/aliases
+fi
+
 generate cat screenrc .in
 # As screen-256color is not widely supported use it only on machines where the
 # matching terminfo entry is available. This also requires a terminal emulator
diff --git a/shell/aliases.in b/shell/aliases.in
index fa76162..c7e234e 100644
--- a/shell/aliases.in
+++ b/shell/aliases.in
@@ -79,6 +79,9 @@ alias du='du -shc'
 # Use human readable sizes.
 alias df='df -h'
 
+# Highlight matched strings. Doesn't work with a pager!
+alias grep='grep --color=auto'
+
 # Edit the mercurial patch queue series file for the current mercurial
 # repository in Vim. Also change Vim's pwd to the patches directory so other
 # patches can easily be opened.
-- 
2.44.1