From 9dfde9ccef6dffbfa68219d91703d779cfe7016a Mon Sep 17 00:00:00 2001
From: Artur Malabarba <artur@biva.com.br>
Date: Tue, 21 Mar 2017 17:00:01 -0300
Subject: Don't enable in modes that derive from text-mode

---
 aggressive-indent.el | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/aggressive-indent.el b/aggressive-indent.el
index 49e9e7c..9006b87 100644
--- a/aggressive-indent.el
+++ b/aggressive-indent.el
@@ -444,7 +444,8 @@ typing, try tweaking this number."
       (if (and global-aggressive-indent-mode
                (or (cl-member-if #'derived-mode-p aggressive-indent-excluded-modes)
                    (equal indent-line-function #'indent-relative)
-                   (memq major-mode '(text-mode fundamental-mode))
+                   (derived-mode-p 'text-mode)
+                   (eq major-mode 'fundamental-mode)
                    buffer-read-only))
           (aggressive-indent-mode -1)
         ;; Should electric indent be ON or OFF?
-- 
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