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feat(emacs.d): Generalise counsel terminal selector

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This makes it possible to use my terminal selector with any X11
terminal, configurable via two simple variables.
This commit is contained in:
Vincent Ambo 2019-12-14 13:21:12 +00:00
parent bd7c9e4b5a
commit c1ba41a62d
1 changed files with 22 additions and 23 deletions
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45
tools/emacs/init/term-setup.el
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@ -1,37 +1,36 @@
;; Utilities for Alacritty buffers.
;; Utilities for X11 terminal buffers.
(defun open-or-create-alacritty-buffer (buffer-name)
"Switch to the buffer with BUFFER-NAME or create a
new buffer running Alacritty."
(defvar x11-terminal-program "gnome-terminal"
"Which X11 terminal application to use.")
(defvar x11-terminal-buffer-prefix "Term"
"String prefix for X11 terminal buffer names.")
(defun open-or-create-terminal-buffer (buffer-name)
"Switch to the buffer with BUFFER-NAME or create a new buffer
running the configured X11 terminal."
(let ((buffer (get-buffer buffer-name)))
(if (not buffer)
(run-external-command "alacritty")
(run-external-command x11-terminal-program)
(switch-to-buffer buffer))))
(defun is-alacritty-buffer (buffer)
"Determine whether BUFFER runs Alacritty."
(defun is-terminal-buffer (buffer)
"Determine whether BUFFER runs an X11 terminal."
(and (equal 'exwm-mode (buffer-local-value 'major-mode buffer))
(s-starts-with? "Alacritty" (buffer-name buffer))))
(s-starts-with? x11-terminal-buffer-prefix (buffer-name buffer))))
(defun counsel-switch-to-alacritty ()
"Switch to a (multi-)term buffer or create one."
(defun counsel-switch-to-terminal ()
"Switch to an X11 terminal buffer, or create a new one."
(interactive)
(let ((terms (-map #'buffer-name
(-filter #'is-alacritty-buffer (buffer-list)))))
(-filter #'is-terminal-buffer (buffer-list)))))
(if terms
(ivy-read "Switch to Alacritty buffer: "
(ivy-read "Switch to terminal buffer: "
(cons "New terminal" terms)
:caller 'counsel-switch-to-alacritty
:caller 'counsel-switch-to-terminal
:preselect (s-concat "^" x11-terminal-buffer-prefix)
:require-match t
:action #'open-or-create-alacritty-buffer)
(run-external-command "alacritty"))))
(defun alacritty-rename ()
"Rename the current terminal buffer."
(interactive)
(let* ((buffer (get-buffer (buffer-name))))
(if (is-alacritty-buffer buffer)
(rename-buffer (format "Alacritty<%s>" (read-string "New terminal name: ")))
(error "This function is only intended to rename Alacritty buffers."))))
:action #'open-or-create-terminal-buffer)
(run-external-command x11-terminal-program))))
(provide 'term-setup)