Disable major mode change hooks when finding definitions

Fixes #208

2 files changed, 5 insertions, 1 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b982385..cf35f3c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,9 @@ Fixed a crash on keyboard macros in keymaps.
 
 String values are now shown as literals by default.
 
+Fixed an issue with modes that override after-change-major-mode-hook,
+such as `global-hi-lock-mode`.
+
 # v0.16
 
 Improved wording when looking at aliases.
diff --git a/helpful.el b/helpful.el
index fc845f0..cd4784a 100644
--- a/helpful.el
+++ b/helpful.el
@@ -1317,8 +1317,9 @@ buffer."
         (buf nil)
         (pos nil)
         (opened nil)
-        ;; Skip running find-file-hook since it may prompt the user.
+        ;; Skip running hooks that may prompt the user.
         (find-file-hook nil)
+        (after-change-major-mode-hook nil)
         ;; If we end up opening a buffer, don't bother with file
         ;; variables. It prompts the user, and we discard the buffer
         ;; afterwards anyway.