mu4e: move mu4e~headers-jump-to-maildir to search

... to mu4e-search-maildir.

Where we can, we move appropriate code from the overpopulated
mu4e-headers.el to mu4e-search, and update users.

mu4e/mu4e-headers.el

@@ -901,8 +901,6 @@ after the end of the search results."
 (defvar mu4e-headers-mode-map
   (let ((map (make-sparse-keymap)))
 
-    (define-key map "j" #'mu4e~headers-jump-to-maildir)
-
     (define-key map "q" #'mu4e~headers-quit-buffer)
     (define-key map "g" #'mu4e-search-rerun) ;; for compatibility
 
@@ -1480,20 +1478,6 @@ untrashed)."
   (interactive)
   (mu4e~headers-prev-or-next-unread nil))
 
-(defun mu4e~headers-jump-to-maildir (maildir &optional edit)
-  "Show the messages in maildir.
-The user is prompted to ask what maildir.  If prefix arg EDIT is
-given, offer to edit the search query before executing it."
-  (interactive
-   (let ((maildir (mu4e-ask-maildir "Jump to maildir: ")))
-     (list maildir current-prefix-arg)))
-  (when maildir
-    (let* ((query (format "maildir:\"%s\"" maildir))
-           (query (if edit
-                      (mu4e-search-read-query "Refine query: " query) query)))
-      (mu4e-mark-handle-when-leaving)
-      (mu4e-search query))))
-
 (defun mu4e-headers-split-view-grow (&optional n)
   "In split-view, grow the headers window.
 In horizontal split-view, increase the number of lines shown by N.

mu4e/mu4e-main.el

@@ -36,7 +36,6 @@
 (require 'mu4e-window)
 
 (declare-function mu4e-compose-new  "mu4e-compose")
-(declare-function mu4e~headers-jump-to-maildir  "mu4e-headers")
 (declare-function mu4e-quit "mu4e")
 
 (require 'cl-lib)
@@ -98,7 +97,6 @@ This version handles updating the current screen as well."
   (let ((map (make-sparse-keymap)))
 
     (define-key map "q" #'mu4e-quit)
-    (define-key map "j" #'mu4e~headers-jump-to-maildir)
     (define-key map "C" #'mu4e-compose-new)
 
     (define-key map "m" #'mu4e--main-toggle-mail-sending-mode)

mu4e/mu4e-obsolete.el

@@ -195,6 +195,9 @@
   'mu4e-search-skip-duplicates-label "1.9.12")
 (define-obsolete-variable-alias 'mu4e-headers-hide-label
   'mu4e-search-hide-label "1.9.12")
+;; by exception, add alias for internal func
+(define-obsolete-function-alias 'mu4e~headers-jump-to-maildir
+  'mu4e-search-maildir "1.9.13")
 
 
 ;; mu4e-main

mu4e/mu4e-search.el

@@ -233,6 +233,21 @@ the search."
   (interactive)
   (mu4e-search-bookmark nil t))
 
+
+(defun mu4e-search-maildir (maildir &optional edit)
+  "Search the messages in maildir.
+The user is prompted to ask what maildir. If prefix arg EDIT is
+given, offer to edit the search query before executing it."
+  (interactive
+   (let ((maildir (mu4e-ask-maildir "Jump to maildir: ")))
+     (list maildir current-prefix-arg)))
+  (when maildir
+    (let* ((query (format "maildir:\"%s\"" maildir))
+           (query (if edit
+                      (mu4e-search-read-query "Refine query: " query) query)))
+      (mu4e-mark-handle-when-leaving)
+      (mu4e-search query))))
+
 (defun mu4e-search-narrow(&optional filter)
   "Narrow the last search.
 Do so by appending search expression FILTER to the last search
@@ -504,7 +519,7 @@ the mode-line.")
     (define-key map "s" #'mu4e-search)
     (define-key map "S" #'mu4e-search-edit)
     (define-key map "/" #'mu4e-search-narrow)
-    ;;(define-key map "j" 'mu4e~headers-jump-to-maildir)
+
     (define-key map (kbd "<M-left>")  #'mu4e-search-prev)
     (define-key map (kbd "\\")        #'mu4e-search-prev)
     (define-key map (kbd "<M-right>") #'mu4e-search-next)
@@ -515,14 +530,17 @@ the mode-line.")
     (define-key map "b" #'mu4e-search-bookmark)
     (define-key map "B" #'mu4e-search-bookmark-edit)
 
-      map))
+    (define-key map "j" #'mu4e-search-maildir)
+    map))
 
 (defvar mu4e--search-menu-items
   '("--"
     ["Search" mu4e-search
      :help "Search using expression"]
     ["Search bookmark" mu4e-search-bookmark
-     :help "Search some bookmark"]
+     :help "Show messages matching some bookmark query"]
+    ["Search maildir" mu4e-search-maildir
+     :help "Show messages in some maildir"]
     ["Previous query" mu4e-search-prev
      :help "Run previous query"]
     ["Next query" mu4e-search-next

mu4e/mu4e-view.el

@@ -867,7 +867,6 @@ This is useful for advising some Gnus-functionality that does not work in mu4e."
     (define-key map "%" #'mu4e-view-mark-pattern)
     (define-key map "t" #'mu4e-view-mark-subthread)
     (define-key map "T" #'mu4e-view-mark-thread)
-    (define-key map "j" #'mu4e~headers-jump-to-maildir)
 
     (define-key map "g" #'mu4e-view-go-to-url)
     (define-key map "k" #'mu4e-view-save-url)