GNU ELPA - tempel

;; Configure Tempel
(use-package tempel
  :bind (("M-+" . tempel-complete) ;; Alternative tempel-expand
         ("M-*" . tempel-insert))

  :init

  ;; Setup completion at point
  (defun tempel-setup-capf ()
    ;; Add the Tempel Capf to `completion-at-point-functions'.  `tempel-expand'
    ;; only triggers on exact matches. We add `tempel-expand' *before* the main
    ;; programming mode Capf, such that it will be tried first.
    (setq-local completion-at-point-functions
                (cons #'tempel-expand completion-at-point-functions))

    ;; Alternatively use `tempel-complete' if you want to see all matches.  Use
    ;; a trigger prefix character in order to prevent Tempel from triggering
    ;; unexpectly.
    ;; (setq-local corfu-auto-trigger "/"
    ;;             completion-at-point-functions
    ;;             (cons (cape-capf-trigger #'tempel-complete ?/)
    ;;                   completion-at-point-functions))
  )

  (add-hook 'conf-mode-hook 'tempel-setup-capf)
  (add-hook 'prog-mode-hook 'tempel-setup-capf)
  (add-hook 'text-mode-hook 'tempel-setup-capf)

  ;; Optionally make the Tempel templates available to Abbrev,
  ;; either locally or globally. `expand-abbrev' is bound to C-x '.
  ;; (add-hook 'prog-mode-hook #'tempel-abbrev-mode)
  ;; (global-tempel-abbrev-mode)
)

;; Optional: Add tempel-collection if you want ready-made templates.
(use-package tempel-collection)

;; Optional: Use the Corfu completion UI
(use-package corfu
  :init
  (global-corfu-mode))

;; ~/.config/emacs/templates

fundamental-mode ;; Available everywhere

(today (format-time-string "%Y-%m-%d")
       :ann "Today's date"
       :doc "Insert today's date")

prog-mode

(fixme (if (derived-mode-p 'emacs-lisp-mode) ";; " comment-start) "FIXME ")
(todo (if (derived-mode-p 'emacs-lisp-mode) ";; " comment-start) "TODO ")
(bug (if (derived-mode-p 'emacs-lisp-mode) ";; " comment-start) "BUG ")
(hack (if (derived-mode-p 'emacs-lisp-mode) ";; " comment-start) "HACK ")

latex-mode

(abstract "\\begin{abstract}\n" r> n> "\\end{abstract}")
(align "\\begin{align}\n" r> n> "\\end{align}")
(alignn "\\begin{align*}\n" r> n> "\\end{align*}")
(gather "\\begin{gather}\n" r> n> "\\end{gather}")
(gatherr "\\begin{gather*}\n" r> n> "\\end{gather*}")
(appendix "\\begin{appendix}\n" r> n> "\\end{appendix}")
(begin "\\begin{" (s env) "}" r> n> "\\end{" (s env) "}")
(center "\\begin{center}\n" r> n> "\\end{center}")
(displaymath "\\begin{displaymath}\n" r> n> "\\end{displaymath}")
(document "\\begin{document}\n" r> n> "\\end{document}")
(enumerate "\\begin{enumerate}\n\\item " r> n> "\\end{enumerate}")
(equation "\\begin{equation}" r> n> "\\end{equation}")
(flushleft "\\begin{flushleft}" r> n> "\\end{flushleft}")
(flushright "\\begin{flushright}" r> n> "\\end{flushright}")
(frac "\\frac{" p "}{" q "}")
(fussypar "\\begin{fussypar}" r> n> "\\end{fussypar}")
(itemize "\\begin{itemize}\n\\item " r> n> "\\end{itemize}")
(letter "\\begin{letter}\n" r> n> "\\end{letter}")
(math "\\begin{math}\n" r> n> "\\end{math}")
(minipage "\\begin{minipage}[t]{0.5\linewidth}\n" r> n> "\\end{minipage}")
(quotation "\\begin{quotation}\n" r> n> "\\end{quotation}")
(quote "\\begin{quote}\n" r> n> "\\end{quote}")
(sloppypar "\\begin{sloppypar}\n" r> n> "\\end{sloppypar}")
(theindex "\\begin{theindex}\n" r> n> "\\end{theindex}")
(trivlist "\\begin{trivlist}\n" r> n> "\\end{trivlist}")
(verbatim "\\begin{verbatim}\n" r> n> "\\end{verbatim}")
(verbatimm "\\begin{verbatim*}\n" r> n> "\\end{verbatim*}")
(matrix (p (read-number "Rows: ") rows noinsert)
        (p (read-number "Cols: ") cols noinsert)
        "\\begin{" (p "pmatrix" type) "}" n
        (* (1- rows) (p " ") (* (1- cols) " & " (p " ")) "\\\\" n)
        (p " ") (* (1- cols) " & " (p " ")) n
        "\\end{" type "}")

texinfo-mode

(defmac "@defmac " p n> r> "@end defmac")
(defun "@defun " p n> r> "@end defun")
(defvar "@defvar " p n> r> "@end defvar")
(example "@example " p n> r> "@end example")
(lisp "@lisp " p n> r> "@end lisp")
(bullet "@itemize @bullet{}" n> r> "@end itemize")
(code "@code{" p "}")
(var "@var{" p "}")

lisp-mode emacs-lisp-mode ;; Specify multiple modes

(lambda "(lambda (" p ")" n> r> ")")

emacs-lisp-mode

(autoload ";;;###autoload")
(pt "(point)")
(var "(defvar " p "\n  \"" p "\")")
(local "(defvar-local " p "\n  \"" p "\")")
(const "(defconst " p "\n  \"" p "\")")
(custom "(defcustom " p "\n  \"" p "\"" n> ":type '" p ")")
(face "(defface " p " '((t :inherit " p "))\n  \"" p "\")")
(group "(defgroup " p " nil\n  \"" p "\"" n> ":group '" p n> ":prefix \"" p "-\")")
(macro "(defmacro " p " (" p ")\n  \"" p "\"" n> r> ")")
(alias "(defalias '" p " '" p ")")
(fun "(defun " p " (" p ")\n  \"" p "\"" n> r> ")")
(iflet "(if-let* (" p ")" n> r> ")")
(whenlet "(when-let* (" p ")" n> r> ")")
(whilelet "(while-let (" p ")" n> r> ")")
(andlet "(and-let* (" p ")" n> r> ")")
(cond "(cond" n "(" q "))" >)
(pcase "(pcase " (p "scrutinee") n "(" q "))" >)
(let "(let (" p ")" n> r> ")")
(lett "(let* (" p ")" n> r> ")")
(pcaselet "(pcase-let (" p ")" n> r> ")")
(pcaselett "(pcase-let* (" p ")" n> r> ")")
(rec "(letrec (" p ")" n> r> ")")
(dotimes "(dotimes (" p ")" n> r> ")")
(dolist "(dolist (" p ")" n> r> ")")
(loop "(cl-loop for " p " in " p " do" n> r> ")")
(command "(defun " p " (" p ")\n  \"" p "\"" n> "(interactive" p ")" n> r> ")")
(advice "(defun " (p "adv" name) " (&rest app)" n> p n> "(apply app))" n>
        "(advice-add #'" (p "fun") " " (p ":around") " #'" (s name) ")")
(header ";;; " (file-name-nondirectory (or (buffer-file-name) (buffer-name)))
        " --- " p " -*- lexical-binding: t -*-" n
        ";;; Commentary:" n ";;; Code:" n n)
(provide "(provide '" (file-name-base (or (buffer-file-name) (buffer-name))) ")" n
         ";;; " (file-name-nondirectory (or (buffer-file-name) (buffer-name)))
         " ends here" n)
(package (i header) r n n (i provide))

eshell-mode

(for "for " (p "i") " in " p " { " q " }")
(while "while { " p " } { " q " }")
(until "until { " p " } { " q " }")
(if "if { " p " } { " q " }")
(ife "if { " p " } { " p " } { " q " }")
(unl "unless { " p " } { " q " }")
(unle "unless { " p " } { " p " } { " q " }")

text-mode

(box "┌─" (make-string (length str) ?─) "─┐" n
     "│ " (s str)                       " │" n
     "└─" (make-string (length str) ?─) "─┘" n :doc "UNICODE BOX")
(abox "+-" (make-string (length str) ?-) "-+" n
      "| " (s str)                       " |" n
      "+-" (make-string (length str) ?-) "-+" n :doc "ASCII BOX")
(cut "--8<---------------cut here---------------start------------->8---" n r n
     "--8<---------------cut here---------------end--------------->8---" n)
(rot13 (p "plain text" text) n "----" n (rot13 text))
(calc (p "taylor(sin(x),x=0,3)" formula) n "----" n (format "%s" (calc-eval formula)))
(table (p (read-number "Rows: ") rows noinsert)
       (p (read-number "Cols: ") cols noinsert)
       "| " (p "  ") (* (1- cols) " | " (p "  ")) " |" n
       "|" (* cols "----|") n
       (* rows "| " (p "  ") (* (1- cols) " | " (p "  ")) " |" n))

rst-mode

(title (make-string (length title) ?=) n (p "Title: " title) n (make-string (length title) ?=) n)

java-mode

(class "public class " (p (file-name-base (or (buffer-file-name) (buffer-name)))) " {" n> r> n "}")

c-mode :when (re-search-backward "^\\S-*$" (line-beginning-position) 'noerror)

(inc "#include <" (p (concat (file-name-base (or (buffer-file-name) (buffer-name))) ".h")) ">")
(incc "#include \"" (p (concat (file-name-base (or (buffer-file-name) (buffer-name))) ".h")) "\"")

org-mode

(caption "#+caption: ")
(drawer ":" p ":" n r ":end:")
(begin "#+begin_" (s name) n> r> n "#+end_" name)
(quote "#+begin_quote" n> r> n "#+end_quote")
(sidenote "#+begin_sidenote" n> r> n "#+end_sidenote")
(marginnote "#+begin_marginnote" n> r> n "#+end_marginnote")
(example "#+begin_example" n> r> n "#+end_example")
(center "#+begin_center" n> r> n "#+end_center")
(ascii "#+begin_export ascii" n> r> n "#+end_export")
(html "#+begin_export html" n> r> n "#+end_export")
(latex "#+begin_export latex" n> r> n "#+end_export")
(comment "#+begin_comment" n> r> n "#+end_comment")
(verse "#+begin_verse" n> r> n "#+end_verse")
(src "#+begin_src " q n r n "#+end_src")
(gnuplot "#+begin_src gnuplot :var data=" (p "table") " :file " (p "plot.png") n r n "#+end_src" :post (org-edit-src-code))
(elisp "#+begin_src emacs-lisp" n r n "#+end_src" :post (org-edit-src-code))
(inlsrc "src_" p "{" q "}")
(title "#+title: " p n "#+author: Daniel Mendler" n "#+language: en")

;; Local Variables:
;; mode: lisp-data
;; outline-regexp: "[a-z]"
;; End:

(defun tempel-include (elt)
  (pcase elt
    (`(i ,inc)
     (cons 'l (or (alist-get inc (tempel--templates))
                  (error "Template %s not found" inc))))))
(add-to-list 'tempel-user-elements #'tempel-include)

(header ";;; " (file-name-nondirectory (or (buffer-file-name) (buffer-name)))
        " --- " p " -*- lexical-binding: t -*-" n
        ";;; Commentary:" n ";;; Code:" n n)
(provide "(provide '" (file-name-base (or (buffer-file-name) (buffer-name))) ")" n
         ";;; " (file-name-nondirectory (or (buffer-file-name) (buffer-name)))
         " ends here" n)
(package (i header) r n n (i provide))

(defun tempel-repeat (elt fields)
  (pcase elt
    (`(* ,count . ,rest)
     (cons 'l (cl-loop for i below (eval count fields) append rest)))))
(add-to-list 'tempel-user-elements #'tempel-repeat)

(table (p (read-number "Rows: ") rows noinsert)
       (p (read-number "Cols: ") cols noinsert)
       "| " (p "  ") (* (1- cols) " | " (p "  ")) " |" n
       "|" (* cols "----|") n
       (* rows "| " (p "  ") (* (1- cols) " | " (p "  ")) " |" n))
(matrix (p (read-number "Rows: ") rows noinsert)
        (p (read-number "Cols: ") cols noinsert)
        "\\begin{" (p "pmatrix" type) "}" n
        (* (1- rows) (p " ") (* (1- cols) " & " (p " ")) "\\\\" n)
        (p " ") (* (1- cols) " & " (p " ")) n
        "\\end{" type "}")

(defvar my-global-templates
  '((fixme comment-start "FIXME ")
    (todo comment-start "TODO "))
  "List of global templates.")

(add-to-list 'tempel-template-sources 'my-global-templates)

(defvar my-emacs-lisp-templates
  '((lambda "(lambda (" p ")" n> r> ")")
    (var "(defvar " p "\n  \"" p "\")")
    (fun "(defun " p " (" p ")\n  \"" p "\"" n> r> ")"))
  "List of Elisp templates.")

(add-hook
 'emacs-lisp-mode-hook
 (lambda ()
   (add-hook 'tempel-template-sources 'my-emacs-lisp-templates nil 'local)))

(tempel-key "C-c t f" fun emacs-lisp-mode-map)
(tempel-key "C-c t d" ("DATE: " (format-time-string "%Y-%m-%d")))