clean up things & go to parent in file name completion

* basic.el (durand-delete-goto-parent-dir)
(minibuffer-local-filename-completion-map): The DEL key goes to the
parent directory when the cursor is before a forward slash
representing a directory name.  This is bound in the keymap that is
only used when completing file names.

* flymake-conf.el (flymake-mode-map): Bind keys to the s-m prefix.
  Also clean up the file.

* init.el (eshell): Start tracking time immediately.

(global-map, prepare-flymake): Prepare loading flymake by a
keybinding.

1 files changed, 60 insertions, 1 deletions

diff --git a/basic.el b/basic.el
index beb08dc..425edae 100644
--- a/basic.el
+++ b/basic.el
@@ -260,7 +260,10 @@ window, then also delete the selected window."
 ;;; I prefer going to the top first.
 
 ;; But I don't really like always going to the top. I am still
-;; thinking about solutions.
+;; thinking about solutions. -- 2021-01-17
+
+;; REVIEW: I am still thinking about solutions... -- 2022-01-15
+;; 00:29:48.391643
 
 (setq recenter-positions (list 'middle 'top 'bottom))
 
@@ -523,3 +526,59 @@ The remaining CONFIGS are evaluated after the package is loaded."
      (require ,package-name)
      ,@configs))
 
+;;; Go to parent in the file name completion map
+
+(defun durand-delete-goto-parent-dir (n &optional kill-flag)
+  "Go to the parent directory when appropriate in completing file \
+names.
+
+This goes to the parent directory when the character before the
+point is a non-escaped forward slash.
+
+N and KILL-FLAG have the same meaning as `delete-backward-char'."
+  (interactive "p\nP")
+  (cond
+   ((and
+     (not (use-region-p))
+     ;; This variable has been said to be supposed to be obsolete
+     ;; since 2011, but it remains today, so I just use it here.
+     minibuffer-completing-file-name
+     (minibufferp nil t)
+     (member (char-before) (list ?/ ?~))
+     (/= (char-before
+          (max (1- (point)) (minibuffer-prompt-end)))
+         ?\\))
+    ;; HACK
+    (let* ((start
+            (let ((result (point))
+                  (begin (minibuffer-prompt-end))
+                  foundp)
+              (while (null foundp)
+                (setq foundp t)
+                (cond
+                 ((or
+                   (and
+                    (= (char-before result) ?~)
+                    (member (char-before (max (1- result) begin))
+                            (list ?/ ?~)))
+                   (and
+                    (= (char-before result) ?/)
+                    (= (char-before (max (1- result) begin)) ?/)))
+                  (setq result (max (1- result) begin)))
+                 ((= result begin))
+                 ((setq result (1- result)) (setq foundp nil))))
+              result))
+           (file-name
+            (expand-file-name (buffer-substring start (point))))
+           (parent
+            (cond
+             ((string= file-name "/") "")
+             ((file-name-directory
+               (directory-file-name file-name))))))
+      (delete-region start (point))
+      (cond
+       ((stringp parent) (insert (abbreviate-file-name parent))))))
+   ((delete-backward-char n kill-flag))))
+
+(define-key minibuffer-local-filename-completion-map
+  (vector ?\d) #'durand-delete-goto-parent-dir)