diff options
Diffstat (limited to 'lisp/help-fns.el')
| -rw-r--r-- | lisp/help-fns.el | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/lisp/help-fns.el b/lisp/help-fns.el index 2425310cd93..7608e9f24e9 100644 --- a/lisp/help-fns.el +++ b/lisp/help-fns.el @@ -158,15 +158,18 @@ KIND should be `var' for a variable or `subr' for a subroutine." (concat "src/" file) file))))) -(defun help-default-arg-highlight (arg) - "Default function to highlight arguments in *Help* buffers. -It returns ARG in face `help-argument-name'; ARG is also -downcased if it displays differently than the default -face (according to `face-differs-from-default-p')." - (propertize (if (face-differs-from-default-p 'help-argument-name) - (downcase arg) - arg) - 'face 'help-argument-name)) +(defcustom help-downcase-arguments nil + "If non-nil, argument names in *Help* buffers are downcased." + :type 'boolean + :group 'help + :version "23.2") + +(defun help-highlight-arg (arg) + "Highlight ARG as an argument name for a *Help* buffer. +Return ARG in face `help-argument-name'; ARG is also downcased +if the variable `help-downcase-arguments' is non-nil." + (propertize (if help-downcase-arguments (downcase arg) arg) + 'face 'help-argument-name)) (defun help-do-arg-highlight (doc args) (with-syntax-table (make-syntax-table emacs-lisp-mode-syntax-table) @@ -184,7 +187,7 @@ face (according to `face-differs-from-default-p')." "\\(?:-[a-z0-9-]+\\)?" ; for ARG-xxx, ARG-n "\\(?:-[{([<`\"].*?\\)?"; for ARG-{x}, (x), <x>, [x], `x' "\\>") ; end of word - (help-default-arg-highlight arg) + (help-highlight-arg arg) doc t t 1))))) (defun help-highlight-arguments (usage doc &rest args) |