1 files changed, 80 insertions, 30 deletions

@@ -17,22 +17,62 @@
   :prefix "+modeline-"
   :group 'simple-modeline)
 
-(defun +modeline-buffer-name ()         ; gonsie
+(defcustom +modeline-default-spacer " "
+  "Default spacer to use for modeline elements.
+All modeline elements take an optional argument, `spacer', which
+will default to this string.")
+
+;;; Combinators
+
+(defun +modeline-concat (segments &optional separator)
+  "Concatenate multiple `simple-modeline'-style SEGMENTS.
+SEGMENTS is a list of either modeline segment-functions (see
+`simple-modeline' functions for an example of types of
+functions), though it can also contain cons cells of the
+form (SEGMENT . PREDICATE).
+
+Segments are separated from each other using SEPARATOR, which
+defaults to a \" \".  space.  Only segments that evaluate to a
+non-trivial string (that is, a string not equal to \"\") will be
+separated, for a cleaner look.
+
+This function makes a lambda, so you can throw it straight into
+`simple-modeline-segments'."
+  (setq separator (or separator +modeline-default-spacer))
+  (lambda ()
+    (apply #'concat
+           (let (this-sep result-list)
+                          (dolist (segment segments)
+                            (push (funcall (or (car-safe segment) segment)
+                                           this-sep)
+                                  result-list)
+                            (if (or (cdr-safe segment)
+                                    (and (car result-list)
+                                         (not (equal (car result-list) ""))))
+                                (setq this-sep separator)
+                              (setq this-sep nil)))
+                          (unless (seq-some #'null result-list)
+                            (push +modeline-default-spacer result-list))
+                          (nreverse result-list)))))
+
+;;; Modeline segments
+
+(defun +modeline-buffer-name (&optional spacer)         ; gonsie
   "Display the buffer name."
-  (concat " " (propertize
-               (+string-align (buffer-name) 20 :before "" :ellipsis "~ ")
-               'face 'bold
-               'help-echo (or (buffer-file-name)
-                              (buffer-name))
-               'mouse-face 'mode-line-highlight)))
+  (concat (or spacer +modeline-default-spacer)
+          (propertize
+           (+string-align (buffer-name) 20 :ellipsis nil)
+           'help-echo (or (buffer-file-name)
+                          (buffer-name))
+           'mouse-face 'mode-line-highlight)))
 
 (defcustom +modeline-minions-icon "&"
   "The \"icon\" for `+modeline-minions' button."
   :type 'string)
 
-(defun +modeline-minions ()
+(defun +modeline-minions (&optional spacer)
   "Display a button for `minions-minor-modes-menu'."
-  (concat " "
+  (concat (or spacer +modeline-default-spacer)
           (propertize
            +modeline-minions-icon
            'help-echo "Minor modes menu\nmouse-1: show menu."
@@ -45,9 +85,9 @@
                                      (minions-minor-modes-menu)))))
            'mouse-face 'mode-line-highlight)))
 
-(defun +modeline-major-mode ()
+(defun +modeline-major-mode (&optional spacer)
   "Display the current `major-mode'."
-  (concat " "
+  (concat (or spacer +modeline-default-spacer)
           (propertize (+string-truncate (format-mode-line mode-name)
                                         12 "~")
                       'face 'bold
@@ -80,7 +120,7 @@ The order of elements matters: whichever one matches first is applied."
 `+modeline-modified'."
   :type '(repeat function))
 
-(defun +modeline-modified () ; modified from `simple-modeline-status-modified'
+(defun +modeline-modified (&optional spacer) ; modified from `simple-modeline-status-modified'
   "Display a color-coded \"icon\" indicator for the buffer's status."
   (let* ((icon (catch :icon
                 (dolist (cell +modeline-modified-icon-alist)
@@ -94,14 +134,20 @@ The order of elements matters: whichever one matches first is applied."
                           ('t t)
                           (_ nil))
                     (throw :icon (cdr cell)))))))
-    (concat " "
+    (concat (or spacer +modeline-default-spacer)
             (propertize (or icon "")
                         'mouse-face 'mode-line-highlight))))
 
-(defun +modeline-narrowed ()
+(defun +modeline-buffer-modes (&optional spacer)
+  "Display various buffer-specific stuff cleanly."
+  ;; This is clunky and should probably be improved.
+  (concat (+modeline-reading-mode)
+          (+modeline-narrowed (when reading-mode ","))))
+
+(defun +modeline-narrowed (&optional spacer)
   "Display an indication that the buffer is narrowed."
   (when (buffer-narrowed-p)
-    (concat " "
+    (concat (or spacer +modeline-default-spacer)
             (propertize "N"
                         'help-echo (format "%s\n%s"
                                            "Buffer is narrowed."
@@ -111,10 +157,10 @@ The order of elements matters: whichever one matches first is applied."
                         'face 'font-lock-doc-face
                         'mouse-face 'mode-line-highlight))))
 
-(defun +modeline-reading-mode ()
+(defun +modeline-reading-mode (&optional spacer)
   "Display an indication that the buffer is in `reading-mode'."
   (when reading-mode
-    (concat " "
+    (concat (or spacer +modeline-default-spacer)
             (propertize
              (concat "R" (when (bound-and-true-p +eww-readable-p) "w"))
              'help-echo (format "%s\n%s"
@@ -136,7 +182,7 @@ The order of elements matters: whichever one matches first is applied."
   "Toggle the percentage display in the mode line (File Percentage Mode)."
   :init-value t :global t :group 'mode-line)
 
-(defun +modeline-position ()            ; adapted from `simple-modeline'
+(defun +modeline-position (&optional _) ; adapted from `simple-modeline'
   "Display the current cursor position."
   (list '((line-number-mode
            ((column-number-mode
@@ -160,34 +206,38 @@ The order of elements matters: whichever one matches first is applied."
                                            (region-bounds))))
                         'font-lock-face 'font-lock-variable-name-face))))
 
-(defun +modeline-vc ()
+(defun +modeline-vc (&optional spacer)
   "Display the version control branch of the current buffer in the modeline."
   ;; from https://www.gonsie.com/blorg/modeline.html, from Doom
   (if-let ((backend (vc-backend buffer-file-name)))
-      (concat " " (substring vc-mode (+ (if (eq backend 'Hg) 2 3) 2)))))
+      (concat (or spacer +modeline-default-spacer)
+              (substring vc-mode (+ (if (eq backend 'Hg) 2 3) 2)))))
 
-(defun +modeline-track ()
+(defun +modeline-track (&optional spacer)
   "Display `tracking-mode' information."
-  '(tracking-mode
+  (when tracking-mode
     tracking-mode-line-buffers))
 
-(defun +modeline-anzu ()
+(defun +modeline-anzu (&optional spacer)
   "Display `anzu--update-mode-line'."
-  (concat " " (anzu--update-mode-line)))
+  (concat (or spacer +modeline-default-spacer)
+          (anzu--update-mode-line)))
 
-(defun +modeline-text-scale ()
+(defun +modeline-text-scale (&optional spacer)
   "Display text scaling level."
   ;; adapted from https://github.com/seagle0128/doom-modeline
   (when (and (boundp 'text-scale-mode-amount)
              (/= text-scale-mode-amount 0))
-    (format (if (> text-scale-mode-amount 0) " (%+d)" " (%-d)")
+    (format (if (> text-scale-mode-amount 0) "%s(%+d)" "%s(%-d)")
+            (or spacer +modeline-default-spacer)
             text-scale-mode-amount)))
 
-(defun +modeline-ace-window-display ()
+(defun +modeline-ace-window-display (&optional spacer)
   "Display `ace-window-display-mode' information in the modeline."
-  '(+ace-window-display-mode
-    (ace-window-mode
-     (" " (:eval (window-parameter (selected-window) 'ace-window-path))))))
+  (when (and +ace-window-display-mode
+             ace-window-mode)
+    (concat (or spacer +modeline-default-spacer)
+            (window-parameter (selected-window) 'ace-window-path))))
 
 (provide '+modeline)
 ;;; +modeline.el ends here