Add linter.

1 files changed, 32 insertions, 0 deletions

diff --git a/dev/lint-commits.sh b/dev/lint-commits.sh
new file mode 100755
index 000000000..eb12bc227
--- /dev/null
+++ b/dev/lint-commits.sh
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+# A script to check prettyness for a range of commits
+
+CALLNAME="$0"
+
+function usage
+{
+    >&2 echo "usage: $CALLNAME <commit> <commit>"
+    >&2 echo "The order of commits is as given to 'git diff'"
+}
+
+if [ "$#" != 2 ];
+then
+    usage
+    exit 1
+fi
+
+BASE_COMMIT="$1"
+HEAD_COMMIT="$2"
+
+# git diff --check
+# uses .gitattributes to know what to check
+if git diff --check "$BASE_COMMIT" "$HEAD_COMMIT";
+then
+    :
+else
+    >&2 echo "Whitespace errors!"
+    >&2 echo "Running 'git diff --check $BASE_COMMIT $HEAD_COMMIT'."
+    >&2 echo "If you use emacs, you can prevent this kind of error from reocurring by installing ws-butler and enabling ws-butler-convert-leading-tabs-or-spaces."
+    exit 1
+fi