match erlang keywords more carefully

Use word boundaries in some regex matching to avoid recognizing words that
begin with keywords as keywords themselves, for example avoid recognizing a
function named catcher as the catch keyword. Add a regression test for this
problem.

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/tools/emacs/test.erl.indented b/lib/tools/emacs/test.erl.indented
index 0dc1b47f0d..1c1086ca58 100644
--- a/lib/tools/emacs/test.erl.indented
+++ b/lib/tools/emacs/test.erl.indented
@@ -749,3 +749,14 @@ commas_first() ->
 %% this used to result in a scan-sexp error
 [{
  }].
+
+%% this used to result in 2x the correct indentation within the function
+%% body, due to the function name being mistaken for a keyword
+catcher(N) ->
+    try generate_exception(N) of
+	Val -> {N, normal, Val}
+    catch
+	throw:X -> {N, caught, thrown, X};
+	exit:X -> {N, caught, exited, X};
+	error:X -> {N, caught, error, X}
+    end.