* lisp/progmodes/sh-script.el (sh-imenu-generic-expression):

Capture a function with `function' keyword and without parentheses
like "function FOO".

Fixes: debbugs:11856

1 files changed, 9 insertions, 2 deletions

diff --git a/lisp/progmodes/sh-script.el b/lisp/progmodes/sh-script.el
index be664c6fc6e..a713539cd8e 100644
--- a/lisp/progmodes/sh-script.el
+++ b/lisp/progmodes/sh-script.el
@@ -327,8 +327,15 @@ shell it really is."
 (defcustom sh-imenu-generic-expression
   `((sh
      . ((nil
-         "^\\s-*\\(function\\s-+\\)?\\([[:alpha:]_][[:alnum:]_]+\\)\\s-*()"
-         2))))
+         ;; function FOO
+         ;; function FOO()
+         "^\\s-*function\\s-+\\\([[:alpha:]_][[:alnum:]_]+\\)\\s-*\\(?:()\\)?"
+         1)
+        ;; FOO()
+        (nil
+         "^\\s-*\\([[:alpha:]_][[:alnum:]_]+\\)\\s-*()"
+         1)
+        )))
   "Alist of regular expressions for recognizing shell function definitions.
 See `sh-feature' and `imenu-generic-expression'."
   :type '(alist :key-type (symbol :tag "Shell")