From 4ad04c6026c261f666897242fe14b353d963422a Mon Sep 17 00:00:00 2001
From: Lucas Werkmeister <mail@lucaswerkmeister.de>
Date: Thu, 27 Sep 2018 13:44:45 +0200
Subject: [PATCH] Add highlighting for macro expansion
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The regex for variable names is based on the one in the line right above
it, for variable definitions (and therefore, like it, suffers from #11),
but is somewhat simplified, since macro expansion doesn’t include
argument lists and we can skip the word separator detection.

Fixes #10.
---
 gnuplot-mode.el | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gnuplot-mode.el b/gnuplot-mode.el
index ff81922..243d1c4 100644
--- a/gnuplot-mode.el
+++ b/gnuplot-mode.el
@@ -237,6 +237,7 @@ multiple lines.  Used in `gnuplot-find-indent-column' and in
     (,gp-variables          . font-lock-variable-name-face)
     ("!"                    . font-lock-negation-char-face)
     ("\\(\\<[a-z]+[a-z_0-9(),]*\\)[ \t]*=" . font-lock-variable-name-face) ; variable declaration
+    ("@[a-z][a-z_0-9]*"     . font-lock-preprocessor-face) ; macro expansion
     ("\$[0-9]+"             . font-lock-string-face)   ; columns
     ("\\[\\([^]]+\\)\\]"    1 font-lock-string-face))) ; brackets