Doc fixes: markup (mainly nil -> @code{nil})

1 files changed, 1 insertions, 1 deletions

diff --git a/doc/misc/mh-e.texi b/doc/misc/mh-e.texi
index d4fd6d52bb3..a5766e346e3 100644
--- a/doc/misc/mh-e.texi
+++ b/doc/misc/mh-e.texi
@@ -3739,7 +3739,7 @@ when you press @key{TAB} when prompted for a folder name.
 
 The hook @code{mh-kill-folder-suppress-prompt-functions} is an abnormal
 hook run at the beginning of the command @kbd{k}. The hook functions
-are called with no arguments and should return a non-nil value to
+are called with no arguments and should return a non-@code{nil} value to
 suppress the normal prompt when you remove a folder. This is useful
 for folders that are easily regenerated. The default value of
 @code{mh-search-p} suppresses the prompt on folders generated by