Rename mode "modulefile-mode" without "s", upon Xavier's request

Add colorization for specific Module variables, using "preprocessor" face

Author: Laurent-Besson

share/emacs/modulefiles-mode.el share/emacs/modulefile-mode.elshare/emacs/modulefiles-mode.el renamed to share/emacs/modulefile-mode.el

@@ -1,11 +1,11 @@
-;;; modulefiles-mode.el --- Major mode for Modules modulefiles editing -*- lexical-binding: t; -*-
+;;; modulefile-mode.el --- Major mode for Modules modulefile editing -*- lexical-binding: t; -*-
 
 ;; Author: Laurent Besson <[email protected]>
 ;; Maintainer: Laurent Besson <[email protected]>
 ;; Created: June 12, 2025
 ;; Version: 1.0
-;; Package-Requires: ((emacs "24")
-;; Keywords: Modules, modulefiles
+;; Tested with: ((emacs "24")
+;; Keywords: Modules, modulefile
 ;; URL: https://modules.readthedocs.io/en/latest/index.html
 
 ;; This file is not part of GNU Emacs.
@@ -25,27 +25,36 @@
 
 ;; Comments:
 
-;; modulefiles-mode is a major mode for highlighting modufiles syntax
-;; it derives from tcl-mode as modulefiles is based on this language
-;; It adds colorizing for main modulefiles commands
+;; modulefile-mode is a major mode for highlighting modufiles syntax
+;; it derives from tcl-mode as modulefile is based on this language
+;; It adds colorizing for main modulefile commands
+
+;; font-lock-keyword-face is used to colorize Modulefile specific commands
+;; font-lock-preprocessor-face is used to colorize Modulefile specific variables
+;; ;; these variables will not be highlighted the same way as regular Tcl variables
 
 ;; Installation
 ;; Copy this file into your Emacs package search directory
 ;; and add the folliwing lines to your .emacs startup file:
 ;;
-;; (add-to-list 'magic-mode-alist '("#%Module" . modulefiles-mode))
-;; (autoload 'modulefiles-mode "modulefiles-mode"
-;;    "Major mode for editing Modulefiles files" t)
+;; (add-to-list 'magic-mode-alist '("#%Module" . modulefile-mode))
+;; (autoload 'modulefile-mode "modulefile-mode"
+;;    "Major mode for editing Modulefile files" t)
 
-;; Modulefiles mode definition:
+;; Modulefile mode definition:
 
-(define-derived-mode modulefiles-mode tcl-mode "Modulefiles"
-  "Major mode for highlighting Modulefiles file type."
-  (font-lock-add-keywords 'modulefiles-mode
+(define-derived-mode modulefile-mode tcl-mode "Modulefile"
+  "Major mode for highlighting Modulefile file type."
+  (font-lock-add-keywords 'modulefile-mode
                           '(
                             ("\\<\\(add-property\\|always-load\\|append-path\\|complete\\|conflict\\|depends-on\\|family\\|getenv\\|getvariant\\|hide-modulefile\\|hide-version\\|is-avail\\|is-loaded\\|is-saved\\|is-used\\|lsb-release\\|module-whatis\\|module-alias\\|module-forbid\\|module-help\\|module-hide\\|module-info\\|module-tag\\|module-version\\|module-virtual\\|module-warn\\|modulepath-label\\|module\\|prepend-path\\|prereq-all\\|prereq-any\\|pushenv\\|prereq\\|remove-path\\reportError\\|reportWarning\\|require-fullname\\|set-alias\\|set-function\\|setenv\\|source-sh\\|uncomplete\\|unset-alias\\|uncomplete\\|unset-alias\\|unset-function\\|unetenv\\|variant\\|versioncmp\\|x-resource\\)\\>" . font-lock-keyword-face)
                             )
                           )
+  (font-lock-add-keywords 'modulefile-mode
+                          '(
+                            ("\\<\\(ModulesVersion\\|ModulesCurrentModulefile\\|ModuleToolVersion\\|ModuleVariant\\|ModuleTool\\)\\>" . font-lock-preprocessor-face)
+                            )
+                          )
   )
 
-(provide 'modulefiles-mode)
+(provide 'modulefile-mode)