Improve commenting/exit handling in binscripts

1 files changed, 8 insertions, 2 deletions

diff --git a/bin/grc b/bin/grc
index 9a02d9da..0db91afa 100755
--- a/bin/grc
+++ b/bin/grc
@@ -1,10 +1,16 @@
 #!/bin/sh
-# Argument or current dir is a Git repository with uncommitted changes
+# Check whether a directory is a Git repository with uncommitted changes
+
+# Enter given directory or bail
 cd -- "${1:-.}" || exit
+
+# If not a Git repository at all, warn explicitly
 if ! isgr ; then
     printf >&2 'grc: Not a Git repository\n'
     exit 1
 fi
-isgr || exit
+
+# Exit 0 if the first command gives any output (added files) or the second one
+# exits 1 (inverted; differences in tracked files)
 [ -n "$(git ls-files --others --exclude-standard)" ] ||
 ! git diff-index --quiet HEAD