Use rx macro instead of hand written regexps

package.use

@@ -1,26 +1,13 @@
-# testing thing 
+nginx rtmp threads pcre-jit
-www-servers/nginx nginx_modueles: #some commnet:  here
+nginx NGINX_MODULES_HTTP: headers_more gunzip fancyindex gzip_static mp4 metrics push_stream random_index realip slice sticky stub_status upload_progress upstream_check addition
 
-app-misc/some-big-word 
+>=nginx
-some-modules a b c d
+<=nginx
-app-misc/nginx 
+=nginx
-*/*  
 
->=app-misc/nginx t
-<=thing t a mweee: mwee: uguu
-
-thing dsadsaading:
-thing Wadsadang:
-
-app-misc/mwee
-app-misc/*
-thing-thonxb
->=x11-libs/
-app-misc/some-big-word:10 mwee: a_flag #comment
-
-app-misc/s
-
-=>app-misc/-_-
-app-misc/thing
 www-servers/nginx
-some big huge line: something after something something: 
+>=www-servers/nginx
+=www-servers/nginx
+>=www-servers/nginx-1.19.1
+
+dev-lang/python:3.7

package.use-mode.el

@@ -37,67 +37,49 @@
     table)
   "Syntax table for `package.use-mode'.")
 
-(setq package.use--repos
+(defvar package.use--version-bit
-      '("acct-group/" "acct-user/" "app-accessibility/" "app-admin/" "app-antivirus/"
+  (rx line-start (? (or "=" ">" "<" ">=" "<="))))
-        "app-arch/" "app-backup/" "app-benchmarks/" "app-cdr/" "app-crypt/"
-        "app-dicts/" "app-doc/" "app-editors/" "app-emacs/" "app-emulation/"
-        "app-eselect/" "app-forensics/" "app-i18n/" "app-laptop/" "app-leechcraft/"
-        "app-metrics/" "app-misc/" "app-mobilephone/" "app-office/" "app-officeext/"
-        "app-pda/" "app-portage/" "app-shells/" "app-text/" "app-vim/" "app-xemacs/"
-        "dev-ada/" "dev-cpp/" "dev-db/" "dev-dotnet/" "dev-embedded/" "dev-erlang/"
-        "dev-games/" "dev-go/" "dev-haskell/" "dev-java/" "dev-lang/" "dev-libs/"
-        "dev-lisp/" "dev-lua/" "dev-ml/" "dev-perl/" "dev-php/" "dev-python/"
-        "dev-qt/" "dev-ros/" "dev-ruby/" "dev-scheme/" "dev-tcltk/" "dev-tex/"
-        "dev-texlive/" "dev-util/" "dev-vcs/" "eclass/" "games-action/"
-        "games-arcade/" "games-board/" "games-emulation/" "games-engines/"
-        "games-fps/" "games-kids/" "games-misc/" "games-mud/" "games-puzzle/"
-        "games-roguelike/" "games-rpg/" "games-server/" "games-simulation/"
-        "games-sports/" "games-strategy/" "games-util/" "gnome-base/" "gnome-extra/"
-        "gnustep-apps/" "gnustep-base/" "gnustep-libs/" "gui-apps/" "gui-libs/"
-        "gui-wm/" "java-virtuals/" "kde-apps/" "kde-frameworks/" "kde-misc/"
-        "kde-plasma/" "licenses/" "lxde-base/" "lxqt-base/" "mail-client/"
-        "mail-filter/" "mail-mta/" "mate-base/" "mate-extra/" "media-fonts/"
-        "media-gfx/" "media-libs/" "media-plugins/" "media-radio/" "media-sound/"
-        "media-tv/" "media-video/" "metadata/" "net-analyzer/" "net-dialup/"
-        "net-dns/" "net-firewall/" "net-fs/" "net-ftp/" "net-im/" "net-irc/"
-        "net-libs/" "net-mail/" "net-misc/" "net-nds/" "net-news/" "net-nntp/"
-        "net-p2p/" "net-print/" "net-proxy/" "net-voip/" "net-vpn/" "net-wireless/"
-        "perl-core/" "profiles/" "ros-meta/" "sci-astronomy/" "sci-biology/"
-        "sci-calculators/" "sci-chemistry/" "sci-electronics/" "sci-geosciences/"
-        "sci-libs/" "sci-mathematics/" "sci-misc/" "sci-physics/" "sci-visualization/"
-        "scripts/" "sec-policy/" "sys-apps/" "sys-auth/" "sys-block/" "sys-boot/"
-        "sys-cluster/" "sys-devel/" "sys-fabric/" "sys-firmware/" "sys-fs/"
-        "sys-kernel/" "sys-libs/" "sys-power/" "sys-process/" "virtual/" "www-apache/"
-        "www-apps/" "www-client/" "www-misc/" "www-plugins/" "www-servers/"
-        "x11-apps/" "x11-base/" "x11-drivers/" "x11-libs/" "x11-misc/" "x11-plugins/"
-        "x11-terms/" "x11-themes/" "x11-wm/" "xfce-base/" "xfce-extra/" "*/"))
 
-(setq package.use--repos-joined (concat "\\(" (string-join package.use--repos "\\|") "\\)"))
+(defvar package.use--catagory-bit
-(defvar package.use--version-bit "^\\([=<>]*\\)?")
+  (rx (1+ (any alnum "_" "." "+" "*" "-")) "/"))
-(setq package.use--name-bit "\\([A-Za-z0-9_\\*-]+\\)")
 
-(setq package.use-font-lock-keywords
+(defvar package.use--name-bit
-      (list `(,(concat package.use--version-bit package.use--repos-joined package.use--name-bit)
+  (rx (group (1+ (any alnum "_" "." "+" "*" "-")))))
-              (0 font-lock-function-name-face)
+
-              (3 font-lock-variable-name-face t))
+(defvar package.use-font-lock-keywords
-            `(,(concat package.use--version-bit package.use--name-bit) . font-lock-keyword-face)
+      (list
-            '(":[0-9]+" 0 font-lock-builtin-face t)
+       ;; >=www-servers/
-            '("[ \\t]+[A-Za-z09_-]+:" 0 font-lock-constant-face t)))
+       ;; www-servers/
+       `(,(concat package.use--version-bit package.use--catagory-bit)
+         . font-lock-function-name-face)
+       ;; >=nginx-1.19.1
+       ;; nginx
+       `(,(concat package.use--version-bit package.use--name-bit)
+         . font-lock-keyword-face)
+       ;; >=www-servers/nginx-1.19.1
+       ;; www-servers/nginx
+       `(,(concat package.use--version-bit package.use--catagory-bit package.use--name-bit)
+         (1 font-lock-variable-name-face t))
+       ;; dev-langs/python:3.7
+       `(,(rx ":" (1+ (any digit ".")))
+         0 font-lock-type-face t)
+       ;; www-servers/nginx NGINX_MODULES_HTTP:
+       `(,(rx (1+ whitespace) (1+ (any alnum "_" "-")) ":")
+         0 font-lock-constant-face t)))
 
 (define-derived-mode package.use-mode prog-mode "package.use"
   :syntax-table nginx-mode-syntax-table
+  :keymap nil
   (set (make-local-variable 'comment-start) "# ")
   (set (make-local-variable 'comment-start-skip) "#+ *")
   (set (make-local-variable 'comment-end) "")
   (set (make-local-variable 'comment-auto-fill-only-comments) t)
-
   (set (make-local-variable 'require-final-newline) t)
-  
   (set (make-local-variable 'font-lock-defaults)
        '(package.use-font-lock-keywords nil)))
 
 ;;;###autoload
-(add-to-list 'auto-mode-alist '("package\\.use'"  . package.use-mode))
+(add-to-list 'auto-mode-alist '("package\\.use$"  . package.use-mode))
 ;;;###autoload
 (add-to-list 'auto-mode-alist '("/package\\.use/" . package.use-mode))