From 52020e40cd7a06a074ec1a2a130cb2c4211ac762 Mon Sep 17 00:00:00 2001
From: Yuchen Pei <hi@ypei.me>
Date: Mon, 17 Oct 2022 16:36:54 +1100
Subject: make external handler independent of xdg

---
 hmm.el | 36 +++++++++++++++++-------------------
 1 file changed, 17 insertions(+), 19 deletions(-)

diff --git a/hmm.el b/hmm.el
index fd3e919..b78d85e 100644
--- a/hmm.el
+++ b/hmm.el
@@ -17,25 +17,23 @@
           (format ,(plist-get engine :format) query)))
        (hmm-add-handler '(:command ,function-name) :query))))
 
-(defmacro hmm-define-external-xdg-handler (xdg-handler)
+(defmacro hmm-define-external-handler (handler)
   (let* ((description (format "%s - %s"
-                              (plist-get xdg-handler :name)
-                              (plist-get xdg-handler :description)))
-         (function-name (intern
-                         (format "hmm-%s"
-                                 (plist-get xdg-handler :xdg-desktop-name))))
+                              (plist-get handler :display-name)
+                              (plist-get handler :description)))
+         (function-name (intern (format "hmm-%s" (plist-get handler :name))))
+         (display-name (plist-get handler :display-name))
          (external-command
           (mapcar (lambda (token)
                     (if (string-match "^%[fFuU]$" token)
                         `arg
                       token))
-                  (split-string (plist-get xdg-handler :external-command))))
-         (name (plist-get xdg-handler :name))
-         (handler (plist-put xdg-handler :command function-name)))
+                  (split-string (plist-get handler :external-command))))
+         (handler (plist-put handler :command function-name)))
     `(progn
        (defun ,function-name (arg)
          ,description
-         (interactive ,(format "sRun %s with: " name))
+         (interactive ,(format "sRun %s with: " display-name))
          (apply 'start-process
                 (append
                  (list (format ,(format "%s-%%s" function-name) arg)
@@ -129,10 +127,9 @@ If it is a url, display a list of url handlers."
       (lambda (handler)
         (and
          (hmm-thing-match thing type handler)
-         (or (member mimetype 
-                     (plist-get handler :mimetypes))
-             (and (null (plist-get handler :mimetypes))
-                  (not (plist-get handler :xdg-desktop-name))))))
+         (or (null (plist-get handler :mimetypes))
+             (member mimetype 
+                     (plist-get handler :mimetypes)))))
       (plist-get hmm-handlers type)))))
 
 (defun hmm-thing-match (thing type handler)
@@ -160,7 +157,7 @@ If it is a url, display a list of url handlers."
     (dolist (browser hmm-web-browsers)
       (eval `(hmm-define-web-search-engine ,engine ,browser))))
   (dolist (xdg-handler (hmm-get-xdg-handlers))
-    (eval `(hmm-define-external-xdg-handler ,xdg-handler)))
+    (eval `(hmm-define-external-handler ,xdg-handler)))
   (dolist (browser hmm-web-browsers)
     (hmm-add-handler
      (list :command (plist-get browser :command)
@@ -169,16 +166,17 @@ If it is a url, display a list of url handlers."
 
 (defun hmm-get-xdg-handlers ()
   (seq-filter
-   'identity
+   (lambda (handler)
+     (and handler (plist-get handler :mimetypes)))
    (mapcar
     (lambda (desktop-file)
       (condition-case nil
           (let ((parsed (xdg-desktop-read-file desktop-file)))
             (list
-             :name (gethash "Name" parsed)
+             :name (intern (concat "xdg-desktop-"
+                                   (file-name-base desktop-file)))
+             :display-name (gethash "Name" parsed)
              :description (gethash "Comment" parsed)
-             :xdg-desktop-name (intern (concat "xdg-desktop-"
-                                               (file-name-base desktop-file)))
              :external-command (gethash "Exec" parsed)
              :mimetypes (seq-filter (lambda (s) (not (string-empty-p s)))
                                     (split-string (gethash "MimeType" parsed) ";"))))
-- 
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