env: only use color diffs on terminals

When sending script/env diff's output to a file or pipeline, you
don't want escape characters for ANSI color sequences fouling the
byte stream.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

diff --git a/scripts/env b/scripts/env
index 63e26eb154da83b638b8c2dc766edbc8a6f98f3f..84166ae5fe45ddeefb82f060fb8d3d1b898e81c9 100755 (executable)
--- a/scripts/env
+++ b/scripts/env
@@ -104,7 +104,7 @@ env_list() {
 env_diff() {
        env_init
        env_sync_data
-       git diff --cached --color
+       git diff --cached --color=auto
        env_link_config
 }