....org/ideasman42/emacs-mono-complete
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69 lines
2.1 KiB
69 lines
2.1 KiB
;;; mono-complete-backend-whole-line.el --- DABBREV back-end -*- lexical-binding: t -*-
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;; URL: https://codeberg.org/ideasman42/emacs-mono-complete
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;; Version: 0.1
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;; Package-Requires: ((emacs "26.2"))
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;;; Commentary:
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;; Whole line back-end.
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;
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;;; Code:
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(require 'mono-complete)
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(defun mono-complete-backend-whole-line-prefix ()
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"Return the prefix at point."
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(save-excursion
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(let ((pos-init (point)))
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(back-to-indentation)
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(cond
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((< (point) pos-init)
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(buffer-substring-no-properties pos-init (point)))
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(t
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nil)))))
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(defun mono-complete-backend-whole-line-complete (prefix cache)
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"Complete at point based on PREFIX & CACHE."
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(let
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( ;; Return a list of strings or nil.
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(result nil)
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(search-re (concat "^[[:blank:]]*" (regexp-quote prefix)))
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(pos-init (point)))
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(save-match-data
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(save-excursion
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;; Search backwards.
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(beginning-of-line)
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(while (and (null result) (re-search-backward search-re nil t))
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(let ((pos-beg (match-end 0)))
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(end-of-line)
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(skip-chars-backward "[:blank:]" pos-beg)
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(when (< pos-beg (point))
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(setq result (list (buffer-substring-no-properties pos-beg (point)))))))
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(unless result
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(goto-char pos-init)
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;; Search forwards.
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(end-of-line)
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(while (and (null result) (re-search-forward search-re nil t))
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(let ((pos-beg (match-end 0)))
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(end-of-line)
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(skip-chars-backward "[:blank:]" pos-beg)
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(when (< pos-beg (point))
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(setq result (list (buffer-substring-no-properties pos-beg (point))))))))))
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(cons result cache)))
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;; ---------------------------------------------------------------------------
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;; Public Callback
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;;;###autoload
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(defun mono-complete-backend-whole-line ()
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"DEBBREV completer."
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(list
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:prefix #'mono-complete-backend-whole-line-prefix
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:complete #'mono-complete-backend-whole-line-complete))
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(provide 'mono-complete-backend-whole-line)
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;;; mono-complete-backend-whole-line.el ends here
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