emacs: wrap process-lines

[notmuch] / emacs / notmuch-lib.el

diff --git a/emacs/notmuch-lib.el b/emacs/notmuch-lib.el
index bc550dc26808f2abb2db7eb209a1382826c09c10..928286c3292cbaf5a16715217a3f18c1819c7d9d 100644 (file)
--- a/emacs/notmuch-lib.el
+++ b/emacs/notmuch-lib.el
@@ -552,16 +552,19 @@ This replaces spaces, percents, and double quotes in STR with
 ;;; MML Utilities
 
 (defun notmuch-match-content-type (t1 t2)
-  "Return t if t1 and t2 are matching content types, taking wildcards into account."
-  (let ((st1 (split-string t1 "/"))
-       (st2 (split-string t2 "/")))
-    (if (or (string= (cadr st1) "*")
-           (string= (cadr st2) "*"))
-       ;; Comparison of content types should be case insensitive.
-       (string= (downcase (car st1))
-                (downcase (car st2)))
-      (string= (downcase t1)
-              (downcase t2)))))
+  "Return t if t1 and t2 are matching content types.
+Take wildcards into account."
+  (and (stringp t1)
+       (stringp t2)
+       (let ((st1 (split-string t1 "/"))
+            (st2 (split-string t2 "/")))
+        (if (or (string= (cadr st1) "*")
+                (string= (cadr st2) "*"))
+            ;; Comparison of content types should be case insensitive.
+            (string= (downcase (car st1))
+                     (downcase (car st2)))
+          (string= (downcase t1)
+                   (downcase t2))))))
 
 (defvar notmuch-multipart/alternative-discouraged
   '(;; Avoid HTML parts.
@@ -857,6 +860,15 @@ You may need to restart Emacs or upgrade your notmuch package."))
       ;; `notmuch-logged-error' does not return.
       ))))
 
+(defmacro notmuch--apply-with-env (func &rest args)
+  `(let ((default-directory "~"))
+     (apply ,func ,@args)))
+
+(defun notmuch--process-lines (program &rest args)
+  "Wrap process-lines, binding DEFAULT-DIRECTORY to a safe
+default"
+  (notmuch--apply-with-env #'process-lines program args))
+
 (defun notmuch-call-notmuch--helper (destination args)
   "Helper for synchronous notmuch invocation commands.