mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-21 06:55:39 +00:00
0f424b16c3
Add '(car pattern)' as the LIGHTER argument of 'highlight-regexp'. This fixes the case when in a file buffer with fundamental-mode: `C-s M-s ' the M-s h r RET`, revert the buffer with 'C-x x g', get the prompt for unhighlight with 'M-s h u'. This showed a raw regexp instead of the human-readable lighter (bug#57534).
937 lines
38 KiB
EmacsLisp
937 lines
38 KiB
EmacsLisp
;;; hi-lock.el --- minor mode for interactive automatic highlighting -*- lexical-binding: t -*-
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;; Copyright (C) 2000-2024 Free Software Foundation, Inc.
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;; Author: David M. Koppelman <koppel@ece.lsu.edu>
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;; Keywords: faces, minor-mode, matching, display
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;; With the hi-lock commands text matching interactively entered
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;; regexp's can be highlighted. For example, `M-x highlight-regexp
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;; RET clearly RET RET' will highlight all occurrences of `clearly'
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;; using a yellow background face. New occurrences of `clearly' will
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;; be highlighted as they are typed. `M-x unhighlight-regexp RET'
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;; will remove the highlighting. Any existing face can be used for
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;; highlighting and a set of appropriate faces is provided. The
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;; regexps can be written into the current buffer in a form that will
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;; be recognized the next time the corresponding file is read (when
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;; file patterns is turned on).
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;;
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;; Applications:
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;;
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;; In program source code highlight a variable to quickly see all
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;; places it is modified or referenced:
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;; M-x highlight-regexp RET ground_contact_switches_closed RET RET
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;;
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;; In a shell or other buffer that is showing lots of program
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;; output, highlight the parts of the output you're interested in:
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;; M-x highlight-regexp RET Total execution time [0-9]+ RET hi-blue-b RET
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;;
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;; In buffers displaying tables, highlight the lines you're interested in:
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;; M-x highlight-lines-matching-regexp RET January 2000 RET hi-black-b RET
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;;
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;; When writing text, highlight personal cliches. This can be
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;; amusing.
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;; M-x highlight-phrase RET as can be seen RET RET
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;;
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;; Setup:
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;;
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;; Put the following code in your init file. This turns on
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;; hi-lock mode and adds a "Regexp Highlighting" entry
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;; to the edit menu.
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;;
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;; (global-hi-lock-mode 1)
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;;
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;; To enable the use of patterns found in files (presumably placed
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;; there by hi-lock) include the following in your init file:
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;;
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;; (setq hi-lock-file-patterns-policy 'ask)
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;;
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;; If you get tired of being asked each time a file is loaded replace
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;; `ask' with a function that returns t if patterns should be read.
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;;
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;; You might also want to bind the hi-lock commands to more
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;; finger-friendly sequences:
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;; (keymap-set hi-lock-map "C-z C-h" 'highlight-lines-matching-regexp)
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;; (keymap-set hi-lock-map "C-z i" 'hi-lock-find-patterns)
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;; (keymap-set hi-lock-map "C-z h" 'highlight-regexp)
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;; (keymap-set hi-lock-map "C-z p" 'highlight-phrase)
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;; (keymap-set hi-lock-map "C-z r" 'unhighlight-regexp)
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;; (keymap-set hi-lock-map "C-z b" 'hi-lock-write-interactive-patterns))
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;; See the documentation for hi-lock-mode `C-h f hi-lock-mode' for
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;; additional instructions.
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;; Sample file patterns:
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; Hi-lock: (("^;;; .*" (0 (quote hi-black-hb) t)))
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; Hi-lock: ( ("make-variable-buffer-\\(local\\)" (0 font-lock-keyword-face)(1 'italic append)))))
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; Hi-lock: end
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;;; Code:
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(defgroup hi-lock nil
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"Interactively add and remove font-lock patterns for highlighting text."
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:link '(custom-manual "(emacs)Highlight Interactively")
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:group 'font-lock)
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(defcustom hi-lock-file-patterns-range 10000
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"Limit of search in a buffer for hi-lock patterns.
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When a file is visited and hi-lock mode is on, patterns starting
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up to this limit are added to font-lock's patterns. See documentation
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of functions `hi-lock-mode' and `hi-lock-find-patterns'."
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:type 'natnum
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:group 'hi-lock)
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(defcustom hi-lock-highlight-range 2000000
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"Size of area highlighted by hi-lock when font-lock not active.
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Font-lock is not active in buffers that do their own highlighting,
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such as the buffer created by `list-colors-display'. In those buffers
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hi-lock patterns will only be applied over a range of
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`hi-lock-highlight-range' characters. If font-lock is active then
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highlighting will be applied throughout the buffer."
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:type 'natnum
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:group 'hi-lock)
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(defcustom hi-lock-exclude-modes
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'(rmail-mode mime/viewer-mode gnus-article-mode term-mode)
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"List of major modes in which hi-lock will not run.
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For security reasons since font lock patterns can specify function
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calls."
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:type '(repeat symbol)
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:group 'hi-lock)
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(defcustom hi-lock-file-patterns-policy 'ask
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"Specify when hi-lock should use patterns found in file.
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If `ask', prompt when patterns found in buffer; if bound to a function,
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use patterns when function returns t (function is called with patterns
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as first argument); if `always', use file patterns without prompt;
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if nil or `never' or anything else, don't use file patterns."
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:type '(choice (const :tag "Do not use file patterns" never)
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(const :tag "Always use file patterns" always)
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(const :tag "Ask about file patterns" ask)
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(function :tag "Function to check file patterns"))
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:group 'hi-lock
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;; It can have a function value.
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:risky t
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:version "22.1")
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(defcustom hi-lock-auto-select-face nil
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"When nil, highlighting commands prompt for the face to use.
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When non-nil, highlighting command determine the faces to use
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by cycling through the faces in `hi-lock-face-defaults'."
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:type 'boolean
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:version "24.4")
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(defgroup hi-lock-faces nil
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"Faces for hi-lock."
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:group 'hi-lock
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:group 'faces)
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(defface hi-yellow
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'((((min-colors 88) (background dark))
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(:background "yellow1" :foreground "black"))
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(((background dark)) (:background "yellow" :foreground "black"))
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(((min-colors 88)) (:background "yellow1"))
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(t (:background "yellow")))
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"Default face for hi-lock mode."
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:group 'hi-lock-faces)
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(defface hi-pink
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'((((background dark)) (:background "pink" :foreground "black"))
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(t (:background "pink")))
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"Face for hi-lock mode."
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:group 'hi-lock-faces)
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(defface hi-green
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'((((min-colors 88) (background dark))
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(:background "light green" :foreground "black"))
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(((background dark)) (:background "green" :foreground "black"))
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(((min-colors 88)) (:background "light green"))
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(t (:background "green")))
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"Face for hi-lock mode."
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:group 'hi-lock-faces)
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(defface hi-blue
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'((((background dark)) (:background "light blue" :foreground "black"))
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(t (:background "light blue")))
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"Face for hi-lock mode."
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:group 'hi-lock-faces)
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(defface hi-salmon
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'((((min-colors 88) (background dark))
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(:background "light salmon" :foreground "black"))
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(((background dark)) (:background "red" :foreground "black"))
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(((min-colors 88)) (:background "light salmon"))
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(t (:background "red")))
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"Face for hi-lock mode."
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:group 'hi-lock-faces
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:version "27.1")
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(defface hi-aquamarine
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'((((min-colors 88) (background dark))
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(:background "aquamarine" :foreground "black"))
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(((background dark)) (:background "blue" :foreground "black"))
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(((min-colors 88)) (:background "aquamarine"))
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(t (:background "blue")))
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"Face for hi-lock mode."
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:group 'hi-lock-faces
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:version "27.1")
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(defface hi-black-b
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'((t (:weight bold)))
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"Face for hi-lock mode."
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:group 'hi-lock-faces)
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(defface hi-blue-b
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'((((min-colors 88)) (:weight bold :foreground "blue1"))
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(t (:weight bold :foreground "blue")))
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"Face for hi-lock mode."
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:group 'hi-lock-faces)
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(defface hi-green-b
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'((((min-colors 88)) (:weight bold :foreground "green3"))
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(t (:weight bold :foreground "green")))
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"Face for hi-lock mode."
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:group 'hi-lock-faces)
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(defface hi-red-b
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'((((min-colors 88)) (:weight bold :foreground "firebrick2"))
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(t (:weight bold :foreground "red")))
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"Face for hi-lock mode."
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:group 'hi-lock-faces)
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(defface hi-black-hb
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'((t (:weight bold :height 1.67 :inherit variable-pitch)))
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"Face for hi-lock mode."
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:group 'hi-lock-faces)
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(defvar-local hi-lock-file-patterns nil
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"Patterns found in file for hi-lock. Should not be changed.")
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(put 'hi-lock-file-patterns 'permanent-local t)
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(defvar-local hi-lock-interactive-patterns nil
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"Patterns provided to hi-lock by user. Should not be changed.")
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(put 'hi-lock-interactive-patterns 'permanent-local t)
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(defvar-local hi-lock-interactive-lighters nil
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"Human-readable lighters for `hi-lock-interactive-patterns'.")
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(put 'hi-lock-interactive-lighters 'permanent-local t)
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(defcustom hi-lock-face-defaults
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'("hi-yellow" "hi-pink" "hi-green" "hi-blue" "hi-salmon" "hi-aquamarine"
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"hi-black-b" "hi-blue-b" "hi-red-b" "hi-green-b" "hi-black-hb")
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"Default face names for hi-lock interactive functions."
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:type '(repeat string)
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:version "29.1")
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(defvar hi-lock-file-patterns-prefix "Hi-lock"
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"String used to identify hi-lock patterns at the start of files.")
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(defvar hi-lock-archaic-interface-message-used nil
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"Non-nil if user alerted that `global-hi-lock-mode' is now the global switch.
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Earlier versions of hi-lock used `hi-lock-mode' as the global switch;
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the message is issued if it appears that `hi-lock-mode' is used assuming
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that older functionality. This variable avoids multiple reminders.")
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(defvar hi-lock-archaic-interface-deduce nil
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"If non-nil, sometimes assume that `hi-lock-mode' means `global-hi-lock-mode'.
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Assumption is made if `hi-lock-mode' used in the *scratch* buffer while
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a library is being loaded.")
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(easy-menu-define hi-lock-menu nil
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"Menu for hi-lock mode."
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'("Hi Lock"
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["Highlight Regexp..." highlight-regexp
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:help "Highlight text matching PATTERN (a regexp)."]
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["Highlight Phrase..." highlight-phrase
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:help "Highlight text matching PATTERN (a regexp processed to match phrases)."]
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["Highlight Lines..." highlight-lines-matching-regexp
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:help "Highlight lines containing match of PATTERN (a regexp)."]
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["Highlight Symbol at Point" highlight-symbol-at-point
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:help "Highlight symbol found near point without prompting."]
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["Remove Highlighting..." unhighlight-regexp
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:help "Remove previously entered highlighting pattern."
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:enable hi-lock-interactive-patterns]
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["Patterns to Buffer" hi-lock-write-interactive-patterns
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:help "Insert interactively added REGEXPs into buffer at point."
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:enable hi-lock-interactive-patterns]
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["Patterns from Buffer" hi-lock-find-patterns
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:help "Use patterns (if any) near top of buffer."]))
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(defvar-keymap hi-lock-map
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:doc "Keymap for `hi-lock-mode'."
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:name "Hi Lock"
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"C-x w i" #'hi-lock-find-patterns
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"C-x w l" #'highlight-lines-matching-regexp
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"C-x w p" #'highlight-phrase
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"C-x w h" #'highlight-regexp
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"C-x w ." #'highlight-symbol-at-point
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"C-x w r" #'unhighlight-regexp
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"C-x w b" #'hi-lock-write-interactive-patterns)
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;; Visible Functions
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;;;###autoload
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(define-minor-mode hi-lock-mode
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"Toggle selective highlighting of patterns (Hi Lock mode).
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Hi Lock mode is automatically enabled when you invoke any of the
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highlighting commands listed below, such as \\[highlight-regexp].
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To enable Hi Lock mode in all buffers, use `global-hi-lock-mode'
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or add (global-hi-lock-mode 1) to your init file.
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In buffers where Font Lock mode is enabled, patterns are
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highlighted using font lock. In buffers where Font Lock mode is
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disabled, patterns are applied using overlays; in this case, the
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highlighting will not be updated as you type. The Font Lock mode
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is considered \"enabled\" in a buffer if its `major-mode'
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causes `font-lock-specified-p' to return non-nil, which means
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the major mode specifies support for Font Lock.
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When Hi Lock mode is enabled, a \"Regexp Highlighting\" submenu
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is added to the \"Edit\" menu. The commands in the submenu,
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which can be called interactively, are:
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\\[highlight-regexp] REGEXP FACE
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Highlight matches of pattern REGEXP in current buffer with FACE.
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\\[highlight-phrase] PHRASE FACE
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Highlight matches of phrase PHRASE in current buffer with FACE.
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(PHRASE can be any REGEXP, but spaces will be replaced by matches
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to whitespace and initial lower-case letters will become case insensitive.)
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\\[highlight-lines-matching-regexp] REGEXP FACE
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Highlight lines containing matches of REGEXP in current buffer with FACE.
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\\[highlight-symbol-at-point]
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Highlight the symbol found near point without prompting, using the next
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available face automatically.
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\\[unhighlight-regexp] REGEXP
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Remove highlighting on matches of REGEXP in current buffer.
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\\[hi-lock-write-interactive-patterns]
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Write active REGEXPs into buffer as comments (if possible). They may
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be read the next time file is loaded or when the \\[hi-lock-find-patterns] command
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is issued. The inserted regexps are in the form of font lock keywords.
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(See `font-lock-keywords'.) They may be edited and re-loaded with \\[hi-lock-find-patterns],
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any valid `font-lock-keywords' form is acceptable. When a file is
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loaded the patterns are read if `hi-lock-file-patterns-policy' is
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`always', or if it's `ask' and the user responds y to the prompt,
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or if `hi-lock-file-patterns-policy' is bound to a function and that
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function returns t.
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\\[hi-lock-find-patterns]
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Re-read patterns stored in buffer (in the format produced by \\[hi-lock-write-interactive-patterns]).
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When hi-lock is started and if the mode is not excluded or patterns
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rejected, the beginning of the buffer is searched for lines of the
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form:
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Hi-lock: (FOO ...)
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where (FOO ...) is a list of patterns. The patterns must start before
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position \(number of characters into buffer)
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`hi-lock-file-patterns-range'. Patterns will be read until
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Hi-lock: end is found. A mode is excluded if it's in the list
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`hi-lock-exclude-modes'."
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:group 'hi-lock
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:lighter (:eval (if (or hi-lock-interactive-patterns
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hi-lock-file-patterns)
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" Hi" ""))
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:global nil
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:keymap hi-lock-map
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(when (and (equal (buffer-name) "*scratch*")
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load-in-progress
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(not (called-interactively-p 'interactive))
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(not hi-lock-archaic-interface-message-used))
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(setq hi-lock-archaic-interface-message-used t)
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(if hi-lock-archaic-interface-deduce
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(global-hi-lock-mode hi-lock-mode)
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(warn "%s"
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"Possible archaic use of (hi-lock-mode).
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Use (global-hi-lock-mode 1) in .emacs to enable hi-lock for all buffers,
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use (hi-lock-mode 1) for individual buffers.")))
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(if hi-lock-mode
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;; Turned on.
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(progn
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(define-key-after menu-bar-edit-menu [hi-lock]
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(cons "Regexp Highlighting" hi-lock-menu))
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(hi-lock-find-patterns)
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(add-hook 'font-lock-mode-hook 'hi-lock-font-lock-hook nil t)
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;; Remove regexps from font-lock-keywords (bug#13891).
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(add-hook 'change-major-mode-hook (lambda () (hi-lock-mode -1)) nil t)
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(add-hook 'revert-buffer-restore-functions
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#'hi-lock-revert-buffer-rehighlight nil t))
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;; Turned off.
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(when (or hi-lock-interactive-patterns
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hi-lock-file-patterns)
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(when hi-lock-interactive-patterns
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(font-lock-remove-keywords nil hi-lock-interactive-patterns)
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(setq hi-lock-interactive-patterns nil
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hi-lock-interactive-lighters nil))
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(when hi-lock-file-patterns
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(font-lock-remove-keywords nil hi-lock-file-patterns)
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(setq hi-lock-file-patterns nil))
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(remove-overlays nil nil 'hi-lock-overlay t)
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(font-lock-flush))
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(define-key-after menu-bar-edit-menu [hi-lock] nil)
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(remove-hook 'font-lock-mode-hook 'hi-lock-font-lock-hook t)
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(remove-hook 'revert-buffer-restore-functions
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#'hi-lock-revert-buffer-rehighlight t)))
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;;;###autoload
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(define-globalized-minor-mode global-hi-lock-mode
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hi-lock-mode turn-on-hi-lock-if-enabled
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:group 'hi-lock)
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(defun turn-on-hi-lock-if-enabled ()
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(setq hi-lock-archaic-interface-message-used t)
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(unless (memq major-mode hi-lock-exclude-modes)
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(hi-lock-mode 1)))
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;;;###autoload
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(defalias 'highlight-lines-matching-regexp 'hi-lock-line-face-buffer)
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;;;###autoload
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(defun hi-lock-line-face-buffer (regexp &optional face)
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"Highlight all lines that match REGEXP using FACE.
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The lines that match REGEXP will be displayed by merging
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the attributes of FACE with any other face attributes
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of text in those lines.
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Interactively, prompt for REGEXP using `read-regexp', then FACE.
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Use the global history list for FACE.
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If REGEXP contains upper case characters (excluding those preceded by `\\')
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and `search-upper-case' is non-nil, the matching is case-sensitive.
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Use Font lock mode, if enabled, to highlight REGEXP. Otherwise,
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use overlays for highlighting. If overlays are used, the
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highlighting will not update as you type."
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(interactive
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(list
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(hi-lock-regexp-okay
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(read-regexp "Regexp to highlight line" 'regexp-history-last))
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(hi-lock-read-face-name)))
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(or (facep face) (setq face 'hi-yellow))
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(unless hi-lock-mode (hi-lock-mode 1))
|
|
(hi-lock-set-pattern
|
|
;; The \\(?:...\\) grouping construct ensures that a leading ^, +, * or ?
|
|
;; or a trailing $ in REGEXP will be interpreted correctly.
|
|
(concat "^.*\\(?:" regexp "\\).*\\(?:$\\)\n?") face nil nil
|
|
(if (and case-fold-search search-upper-case)
|
|
(isearch-no-upper-case-p regexp t)
|
|
case-fold-search)))
|
|
|
|
|
|
;;;###autoload
|
|
(defalias 'highlight-regexp 'hi-lock-face-buffer)
|
|
;;;###autoload
|
|
(defun hi-lock-face-buffer (regexp &optional face subexp lighter)
|
|
"Set face of each match of REGEXP to FACE.
|
|
Interactively, prompt for REGEXP using `read-regexp', then FACE.
|
|
Use the global history list for FACE. Limit face setting to the
|
|
corresponding SUBEXP (interactively, the prefix argument) of REGEXP.
|
|
If SUBEXP is omitted or nil, the entire REGEXP is highlighted.
|
|
|
|
LIGHTER is a human-readable string that can be used to select
|
|
a regexp to unhighlight by its name instead of selecting a possibly
|
|
complex regexp or closure.
|
|
|
|
If REGEXP contains upper case characters (excluding those preceded by `\\')
|
|
and `search-upper-case' is non-nil, the matching is case-sensitive.
|
|
|
|
Use Font lock mode, if enabled, to highlight REGEXP. Otherwise,
|
|
use overlays for highlighting. If overlays are used, the
|
|
highlighting will not update as you type. The Font Lock mode
|
|
is considered \"enabled\" in a buffer if its `major-mode'
|
|
causes `font-lock-specified-p' to return non-nil, which means
|
|
the major mode specifies support for Font Lock."
|
|
(interactive
|
|
(list
|
|
(hi-lock-regexp-okay
|
|
(read-regexp "Regexp to highlight"
|
|
(if (use-region-p)
|
|
(prog1
|
|
(buffer-substring (region-beginning)
|
|
(region-end))
|
|
(deactivate-mark))
|
|
'regexp-history-last)))
|
|
(hi-lock-read-face-name)
|
|
current-prefix-arg))
|
|
(when (stringp face)
|
|
(setq face (intern face)))
|
|
(or (facep face) (setq face 'hi-yellow))
|
|
(unless hi-lock-mode (hi-lock-mode 1))
|
|
(hi-lock-set-pattern
|
|
regexp face subexp lighter
|
|
(if (and case-fold-search search-upper-case)
|
|
(isearch-no-upper-case-p regexp t)
|
|
case-fold-search)
|
|
search-spaces-regexp))
|
|
|
|
;;;###autoload
|
|
(defalias 'highlight-phrase 'hi-lock-face-phrase-buffer)
|
|
;;;###autoload
|
|
(defun hi-lock-face-phrase-buffer (regexp &optional face)
|
|
"Set face of each match of phrase REGEXP to FACE.
|
|
Interactively, prompt for REGEXP using `read-regexp', then FACE.
|
|
Use the global history list for FACE.
|
|
|
|
If REGEXP contains upper case characters (excluding those preceded by `\\')
|
|
and `search-upper-case' is non-nil, the matching is case-sensitive.
|
|
Also set `search-spaces-regexp' to the value of `search-whitespace-regexp'.
|
|
|
|
Use Font lock mode, if enabled, to highlight REGEXP. Otherwise,
|
|
use overlays for highlighting. If overlays are used, the
|
|
highlighting will not update as you type. The Font Lock mode
|
|
is considered \"enabled\" in a buffer if its `major-mode'
|
|
causes `font-lock-specified-p' to return non-nil, which means
|
|
the major mode specifies support for Font Lock."
|
|
(interactive
|
|
(list
|
|
(hi-lock-regexp-okay
|
|
(read-regexp "Phrase to highlight" 'regexp-history-last))
|
|
(hi-lock-read-face-name)))
|
|
(or (facep face) (setq face 'hi-yellow))
|
|
(unless hi-lock-mode (hi-lock-mode 1))
|
|
(hi-lock-set-pattern
|
|
regexp face nil nil
|
|
(if (and case-fold-search search-upper-case)
|
|
(isearch-no-upper-case-p regexp t)
|
|
case-fold-search)
|
|
search-whitespace-regexp))
|
|
|
|
;;;###autoload
|
|
(defalias 'highlight-symbol-at-point 'hi-lock-face-symbol-at-point)
|
|
;;;###autoload
|
|
(defun hi-lock-face-symbol-at-point ()
|
|
"Highlight each instance of the symbol at point.
|
|
Uses the next face from `hi-lock-face-defaults' without prompting,
|
|
unless you use a prefix argument.
|
|
Uses `find-tag-default-as-symbol-regexp' to retrieve the symbol at point.
|
|
|
|
If REGEXP contains upper case characters (excluding those preceded by `\\')
|
|
and `search-upper-case' is non-nil, the matching is case-sensitive.
|
|
|
|
This uses Font lock mode if it is enabled; otherwise it uses overlays,
|
|
in which case the highlighting will not update as you type. The Font
|
|
Lock mode is considered \"enabled\" in a buffer if its `major-mode'
|
|
causes `font-lock-specified-p' to return non-nil, which means
|
|
the major mode specifies support for Font Lock."
|
|
(interactive)
|
|
(let* ((regexp (hi-lock-regexp-okay
|
|
(find-tag-default-as-symbol-regexp)))
|
|
(hi-lock-auto-select-face t)
|
|
(face (hi-lock-read-face-name)))
|
|
(or (facep face) (setq face 'hi-yellow))
|
|
(unless hi-lock-mode (hi-lock-mode 1))
|
|
(hi-lock-set-pattern
|
|
regexp face nil nil
|
|
(if (and case-fold-search search-upper-case)
|
|
(isearch-no-upper-case-p regexp t)
|
|
case-fold-search))))
|
|
|
|
(defun hi-lock-keyword->face (keyword)
|
|
(cadr (cadr (cadr keyword)))) ; Keyword looks like (REGEXP (0 'FACE) ...).
|
|
|
|
(declare-function x-popup-menu "menu.c" (position menu))
|
|
|
|
(defun hi-lock--regexps-at-point ()
|
|
(let ((regexps '()))
|
|
;; When using overlays, there is no ambiguity on the best
|
|
;; choice of regexp.
|
|
(let ((regexp (get-char-property (point) 'hi-lock-overlay-regexp)))
|
|
(when regexp (push regexp regexps)))
|
|
;; With font-locking on, check if the cursor is on a highlighted text.
|
|
(let* ((faces-after (get-text-property (point) 'face))
|
|
(faces-before
|
|
(unless (bobp) (get-text-property (1- (point)) 'face)))
|
|
;; Use proper-list-p to handle faces like (foreground-color . "red3")
|
|
(faces-after (if (proper-list-p faces-after) faces-after (list faces-after)))
|
|
(faces-before (if (proper-list-p faces-before) faces-before (list faces-before)))
|
|
(faces (mapcar #'hi-lock-keyword->face
|
|
hi-lock-interactive-patterns))
|
|
(face-after (seq-some (lambda (face) (car (memq face faces))) faces-after))
|
|
(face-before (seq-some (lambda (face) (car (memq face faces))) faces-before)))
|
|
(when (and face-before face-after (not (eq face-before face-after)))
|
|
(setq face-before nil))
|
|
(when (or face-after face-before)
|
|
(let* ((beg (if face-before
|
|
(or (previous-single-property-change (point) 'face)
|
|
(point-min))
|
|
(point)))
|
|
(end (if face-after
|
|
(or (next-single-property-change (point) 'face)
|
|
(point-max))
|
|
(point))))
|
|
;; Compute hi-lock patterns that match the
|
|
;; highlighted text at point. Use this later in
|
|
;; during completing-read.
|
|
(dolist (hi-lock-pattern hi-lock-interactive-patterns)
|
|
(let ((pattern (or (rassq hi-lock-pattern hi-lock-interactive-lighters)
|
|
(car hi-lock-pattern))))
|
|
(cond
|
|
((stringp pattern)
|
|
(when (string-match pattern (buffer-substring-no-properties beg end))
|
|
(push pattern regexps)))
|
|
((functionp (cadr pattern))
|
|
(save-excursion
|
|
(goto-char beg)
|
|
(when (funcall (cadr pattern) end)
|
|
(push (car pattern) regexps))))))))))
|
|
regexps))
|
|
|
|
(defvar-local hi-lock--unused-faces nil
|
|
"List of faces that is not used and is available for highlighting new text.
|
|
Face names from this list come from `hi-lock-face-defaults'.")
|
|
|
|
;;;###autoload
|
|
(defalias 'unhighlight-regexp 'hi-lock-unface-buffer)
|
|
;;;###autoload
|
|
(defun hi-lock-unface-buffer (regexp)
|
|
"Remove highlighting of each match to REGEXP set by hi-lock.
|
|
Interactively, prompt for REGEXP, accepting only regexps
|
|
previously inserted by hi-lock interactive functions.
|
|
If REGEXP is t (or if \\[universal-argument] was specified interactively),
|
|
then remove all hi-lock highlighting."
|
|
(interactive
|
|
(cond
|
|
(current-prefix-arg (list t))
|
|
((and (display-popup-menus-p)
|
|
last-nonmenu-event
|
|
(listp last-nonmenu-event)
|
|
use-dialog-box)
|
|
(catch 'snafu
|
|
(or
|
|
(x-popup-menu
|
|
t
|
|
(cons
|
|
'keymap
|
|
(cons "Select Pattern to Unhighlight"
|
|
(mapcar (lambda (pattern)
|
|
(let ((lighter
|
|
(or (car (rassq pattern hi-lock-interactive-lighters))
|
|
(car pattern))))
|
|
(list lighter
|
|
(format
|
|
"%s (%s)" lighter
|
|
(hi-lock-keyword->face pattern))
|
|
(cons nil nil)
|
|
lighter)))
|
|
hi-lock-interactive-patterns))))
|
|
;; If the user clicks outside the menu, meaning that they
|
|
;; change their mind, x-popup-menu returns nil, and
|
|
;; interactive signals a wrong number of arguments error.
|
|
;; To prevent that, we return an empty string, which will
|
|
;; effectively disable the rest of the function.
|
|
(throw 'snafu '("")))))
|
|
(t
|
|
;; Un-highlighting triggered via keyboard action.
|
|
(unless hi-lock-interactive-patterns
|
|
(user-error "No highlighting to remove"))
|
|
;; Infer the regexp to un-highlight based on cursor position.
|
|
(let* ((defaults (or (hi-lock--regexps-at-point)
|
|
(mapcar (lambda (pattern)
|
|
(or (car (rassq pattern hi-lock-interactive-lighters))
|
|
(car pattern)))
|
|
hi-lock-interactive-patterns))))
|
|
(list
|
|
(completing-read (format-prompt "Regexp to unhighlight" (car defaults))
|
|
(mapcar (lambda (pattern)
|
|
(cons (or (car (rassq pattern hi-lock-interactive-lighters))
|
|
(car pattern))
|
|
(cdr pattern)))
|
|
hi-lock-interactive-patterns)
|
|
nil t nil nil defaults))))))
|
|
|
|
(when (assoc regexp hi-lock-interactive-lighters)
|
|
(setq regexp (cadr (assoc regexp hi-lock-interactive-lighters))))
|
|
|
|
(dolist (keyword (if (eq regexp t) hi-lock-interactive-patterns
|
|
(list (assoc regexp hi-lock-interactive-patterns))))
|
|
(when keyword
|
|
(let ((face (hi-lock-keyword->face keyword)))
|
|
;; Make `face' the next one to use by default.
|
|
(when (symbolp face) ;Don't add it if it's a list (bug#13297).
|
|
(add-to-list 'hi-lock--unused-faces (face-name face))))
|
|
;; FIXME: Calling `font-lock-remove-keywords' causes
|
|
;; `font-lock-specified-p' to go from nil to non-nil (because it
|
|
;; calls font-lock-set-defaults). This is yet-another bug in
|
|
;; font-lock-add/remove-keywords, which we circumvent here by
|
|
;; testing `font-lock-fontified' (bug#19796).
|
|
(if font-lock-fontified (font-lock-remove-keywords nil (list keyword)))
|
|
(setq hi-lock-interactive-patterns
|
|
(delq keyword hi-lock-interactive-patterns))
|
|
(remove-overlays
|
|
nil nil 'hi-lock-overlay-regexp
|
|
(or (car (rassq keyword hi-lock-interactive-lighters))
|
|
(hi-lock--hashcons (car keyword))))
|
|
(setq hi-lock-interactive-lighters
|
|
(rassq-delete-all keyword hi-lock-interactive-lighters))
|
|
(font-lock-flush))))
|
|
|
|
;;;###autoload
|
|
(defun hi-lock-write-interactive-patterns ()
|
|
"Write interactively added patterns, if any, into buffer at point.
|
|
|
|
Interactively added patterns are those normally specified using
|
|
`highlight-regexp' and `highlight-lines-matching-regexp'; they can
|
|
be found in variable `hi-lock-interactive-patterns'."
|
|
(interactive)
|
|
(if (null hi-lock-interactive-patterns)
|
|
(user-error "There are no interactive patterns"))
|
|
(let ((beg (point)))
|
|
(mapc
|
|
(lambda (pattern)
|
|
(insert (format "%s: (%s)\n"
|
|
hi-lock-file-patterns-prefix
|
|
(prin1-to-string pattern))))
|
|
hi-lock-interactive-patterns)
|
|
(comment-region beg (point)))
|
|
(when (> (point) hi-lock-file-patterns-range)
|
|
(warn "Inserted keywords not close enough to top of file")))
|
|
|
|
;; Implementation Functions
|
|
|
|
(defun hi-lock-regexp-okay (regexp)
|
|
"Return REGEXP if it appears suitable for a font-lock pattern.
|
|
|
|
Otherwise signal an error. A pattern that matches the null string is
|
|
not suitable."
|
|
(cond
|
|
((null regexp)
|
|
(error "Regexp cannot match nil"))
|
|
((string-match regexp "")
|
|
(error "Regexp cannot match an empty string"))
|
|
(t regexp)))
|
|
|
|
(defun hi-lock-read-face-name ()
|
|
"Return face for interactive highlighting.
|
|
When `hi-lock-auto-select-face' is non-nil, just return the next face.
|
|
Otherwise, or with a prefix argument, read a face from the minibuffer
|
|
with completion and history."
|
|
(unless hi-lock-interactive-patterns
|
|
(setq hi-lock--unused-faces hi-lock-face-defaults))
|
|
(let* ((last-used-face
|
|
(when hi-lock-interactive-patterns
|
|
(face-name (hi-lock-keyword->face
|
|
(car hi-lock-interactive-patterns)))))
|
|
(defaults (seq-uniq
|
|
(append hi-lock--unused-faces
|
|
(cdr (member last-used-face hi-lock-face-defaults))
|
|
hi-lock-face-defaults)
|
|
#'equal))
|
|
face)
|
|
(if (and hi-lock-auto-select-face (not current-prefix-arg))
|
|
(setq face (or (pop hi-lock--unused-faces) (car defaults)))
|
|
(setq face (symbol-name (read-face-name "Highlight using face" defaults)))
|
|
;; Update list of un-used faces.
|
|
(setq hi-lock--unused-faces (remove face hi-lock--unused-faces))
|
|
;; Grow the list of defaults.
|
|
(add-to-list 'hi-lock-face-defaults face t))
|
|
(intern face)))
|
|
|
|
(defvar hi-lock-use-overlays nil
|
|
"Whether to always use overlays instead of font-lock rules.
|
|
When `font-lock-mode' is enabled and the buffer specifies font-lock rules,
|
|
highlighting is performed by adding new font-lock rules to the existing ones,
|
|
so when new matching strings are added, they are highlighted by font-lock.
|
|
Otherwise, overlays are used, but new highlighting overlays are not added
|
|
when new matching strings are inserted to the buffer.
|
|
However, sometimes overlays are still preferable even in buffers
|
|
where font-lock is enabled, when hi-lock overlays take precedence
|
|
over other overlays in the same buffer.")
|
|
|
|
(defun hi-lock-set-pattern (regexp face &optional subexp lighter case-fold spaces-regexp)
|
|
"Highlight SUBEXP of REGEXP with face FACE.
|
|
If omitted or nil, SUBEXP defaults to zero, i.e. the entire
|
|
REGEXP is highlighted. LIGHTER is a human-readable string to
|
|
display instead of a regexp. Non-nil CASE-FOLD ignores case.
|
|
SPACES-REGEXP is a regexp to substitute spaces in font-lock search."
|
|
;; Hashcons the regexp, so it can be passed to remove-overlays later.
|
|
(setq regexp (hi-lock--hashcons regexp))
|
|
(setq subexp (or subexp 0))
|
|
(when lighter (setq lighter (propertize lighter 'regexp regexp)))
|
|
(let ((pattern (list (lambda (limit)
|
|
(let ((case-fold-search case-fold)
|
|
(search-spaces-regexp spaces-regexp))
|
|
(re-search-forward regexp limit t)))
|
|
(list subexp (list 'quote face) 'prepend)))
|
|
(no-matches t))
|
|
;; Refuse to highlight a text that is already highlighted.
|
|
(if (or (assoc regexp hi-lock-interactive-patterns)
|
|
(assoc (or lighter regexp) hi-lock-interactive-lighters))
|
|
(add-to-list 'hi-lock--unused-faces (face-name face))
|
|
(push pattern hi-lock-interactive-patterns)
|
|
(push (cons (or lighter regexp) pattern) hi-lock-interactive-lighters)
|
|
(if (and font-lock-mode (font-lock-specified-p major-mode)
|
|
(not hi-lock-use-overlays))
|
|
(progn
|
|
(font-lock-add-keywords nil (list pattern) t)
|
|
(font-lock-flush))
|
|
(let* ((range-min (- (point) (/ hi-lock-highlight-range 2)))
|
|
(range-max (+ (point) (/ hi-lock-highlight-range 2)))
|
|
(search-start
|
|
(max (point-min)
|
|
(- range-min (max 0 (- range-max (point-max))))))
|
|
(search-end
|
|
(min (point-max)
|
|
(+ range-max (max 0 (- (point-min) range-min)))))
|
|
(case-fold-search case-fold)
|
|
(search-spaces-regexp spaces-regexp))
|
|
(save-excursion
|
|
(goto-char search-start)
|
|
(while (re-search-forward regexp search-end t)
|
|
(when no-matches (setq no-matches nil))
|
|
(let ((overlay (make-overlay (match-beginning subexp)
|
|
(match-end subexp))))
|
|
(overlay-put overlay 'hi-lock-overlay t)
|
|
(overlay-put overlay 'hi-lock-overlay-regexp (or lighter regexp))
|
|
;; Use priority higher than default used by e.g. diff-refine.
|
|
(overlay-put overlay 'priority 1)
|
|
(overlay-put overlay 'face face))
|
|
(goto-char (match-end 0)))
|
|
(when no-matches
|
|
(add-to-list 'hi-lock--unused-faces (face-name face))
|
|
(setq hi-lock-interactive-patterns
|
|
(cdr hi-lock-interactive-patterns)
|
|
hi-lock-interactive-lighters
|
|
(cdr hi-lock-interactive-lighters))))
|
|
(when (or (> search-start (point-min)) (< search-end (point-max)))
|
|
(message "Hi-lock added only in range %d-%d" search-start search-end)))))))
|
|
|
|
(defun hi-lock-set-file-patterns (patterns)
|
|
"Replace file patterns list with PATTERNS and refontify."
|
|
(when (or hi-lock-file-patterns patterns)
|
|
(font-lock-remove-keywords nil hi-lock-file-patterns)
|
|
(setq hi-lock-file-patterns patterns)
|
|
(font-lock-add-keywords nil hi-lock-file-patterns t)
|
|
(font-lock-flush)))
|
|
|
|
;;;###autoload
|
|
(defun hi-lock-find-patterns ()
|
|
"Add patterns from the current buffer to the list of hi-lock patterns."
|
|
(interactive)
|
|
(unless (memq major-mode hi-lock-exclude-modes)
|
|
(let ((all-patterns nil)
|
|
(target-regexp (concat "\\<" hi-lock-file-patterns-prefix ":")))
|
|
(save-excursion
|
|
(save-restriction
|
|
(widen)
|
|
(goto-char (point-min))
|
|
(re-search-forward target-regexp
|
|
(+ (point) hi-lock-file-patterns-range) t)
|
|
(beginning-of-line)
|
|
(while (and (re-search-forward target-regexp (+ (point) 100) t)
|
|
(not (looking-at "\\s-*end")))
|
|
(condition-case nil
|
|
(setq all-patterns (append (read (current-buffer)) all-patterns))
|
|
(error (message "Invalid pattern list expression at line %d"
|
|
(line-number-at-pos)))))))
|
|
(when (and all-patterns
|
|
hi-lock-mode
|
|
(cond
|
|
((eq this-command 'hi-lock-find-patterns) t)
|
|
((functionp hi-lock-file-patterns-policy)
|
|
(funcall hi-lock-file-patterns-policy all-patterns))
|
|
((eq hi-lock-file-patterns-policy 'ask)
|
|
(y-or-n-p "Add patterns from this buffer to hi-lock? "))
|
|
((eq hi-lock-file-patterns-policy 'always) t)
|
|
(t nil)))
|
|
(hi-lock-set-file-patterns all-patterns)
|
|
(if (called-interactively-p 'interactive)
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(message "Hi-lock added %d patterns." (length all-patterns)))))))
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(defun hi-lock-font-lock-hook ()
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"Add hi-lock patterns to font-lock's."
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(when font-lock-fontified
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(font-lock-add-keywords nil hi-lock-file-patterns t)
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(font-lock-add-keywords nil hi-lock-interactive-patterns t)))
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|
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(defun hi-lock-revert-buffer-rehighlight ()
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"Rehighlight hi-lock patterns after `revert-buffer'.
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Apply the previous patterns after reverting the buffer."
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(when (or hi-lock-interactive-lighters hi-lock-file-patterns)
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(let ((patterns hi-lock-interactive-lighters)
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(policy (if hi-lock-file-patterns 'always 'never))
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rehighlight)
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(lambda ()
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;; When using revert-buffer without preserve-modes
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|
(unless hi-lock-mode
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|
;; Don't ask about file patterns again
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|
(let ((hi-lock-file-patterns-policy policy))
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(hi-lock-mode 1))
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|
(setq rehighlight t))
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;; When using hi-lock overlays, then need to update them
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|
(unless (and font-lock-mode (font-lock-specified-p major-mode)
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|
(not hi-lock-use-overlays))
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|
(hi-lock-unface-buffer t)
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|
(setq rehighlight t))
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|
(when rehighlight
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|
(setq hi-lock--unused-faces hi-lock-face-defaults)
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|
(dolist (pattern (reverse patterns))
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|
(let ((face (hi-lock-keyword->face (cdr pattern))))
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|
(highlight-regexp (or (get-text-property 0 'regexp (car pattern))
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|
(car pattern))
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|
face nil (car pattern))
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|
(setq hi-lock--unused-faces
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|
(remove (face-name face) hi-lock--unused-faces)))))))))
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|
|
|
(defvar hi-lock--hashcons-hash
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|
(make-hash-table :test 'equal :weakness t)
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|
"Hash table used to hash cons regexps.")
|
|
|
|
(defun hi-lock--hashcons (string)
|
|
"Return unique object equal to STRING."
|
|
(or (gethash string hi-lock--hashcons-hash)
|
|
(puthash string string hi-lock--hashcons-hash)))
|
|
|
|
(defun hi-lock-unload-function ()
|
|
"Unload the Hi-Lock library."
|
|
(global-hi-lock-mode -1)
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|
;; continue standard unloading
|
|
nil)
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|
|
|
;;; Mouse support
|
|
(defalias 'highlight-symbol-at-mouse 'hi-lock-face-symbol-at-mouse)
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|
(defun hi-lock-face-symbol-at-mouse (event)
|
|
"Highlight symbol at mouse click EVENT."
|
|
(interactive "e")
|
|
(save-excursion
|
|
(mouse-set-point event)
|
|
(highlight-symbol-at-point)))
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|
|
|
;;;###autoload
|
|
(defun hi-lock-context-menu (menu click)
|
|
"Populate MENU with a menu item to highlight symbol at CLICK."
|
|
(when (thing-at-mouse click 'symbol)
|
|
(define-key-after menu [highlight-search-separator] menu-bar-separator
|
|
'middle-separator)
|
|
(define-key-after menu [highlight-search-mouse]
|
|
'(menu-item "Highlight Symbol" highlight-symbol-at-mouse
|
|
:help "Highlight symbol at point")
|
|
'highlight-search-separator))
|
|
menu)
|
|
|
|
(provide 'hi-lock)
|
|
|
|
;;; hi-lock.el ends here
|