From 8ee9e20f8cf1f1f880792dcc1048293ea0342ba4 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Miha=20Rihtar=C5=A1i=C4=8D?= Date: Wed, 15 Jun 2022 14:24:24 +0200 Subject: [PATCH] whitespace.el: New whitespace style `lines-char' * lisp/whitespace.el (whitespace-style): (whitespace-style-value-list): (whitespace-toggle-option-alist): (global-whitespace-toggle-options): (whitespace-help-text): (whitespace-interactive-char): (whitespace-style-face-p): (whitespace-color-on): (whitespace-lines-regexp): New whitespace style `lines-char', which highlights only the first character over the whitespace-line-column limit (bug#55980). --- lisp/whitespace.el | 39 +++++++++++++++++++++++++++++++-------- 1 file changed, 31 insertions(+), 8 deletions(-) diff --git a/lisp/whitespace.el b/lisp/whitespace.el index 610d670ac95..7ee8a46cecf 100644 --- a/lisp/whitespace.el +++ b/lisp/whitespace.el @@ -295,8 +295,8 @@ It's a list containing some or all of the following values: `whitespace-line-column' are highlighted via faces. Whole line is highlighted. - It has precedence over `lines-tail' (see - below). + It has precedence over `lines-tail' and + `lines-char' (see below). It has effect only if `face' (see above) is present in `whitespace-style'. @@ -310,6 +310,15 @@ It's a list containing some or all of the following values: and if `face' (see above) is present in `whitespace-style'. + lines-char lines which have columns beyond + `whitespace-line-column' are highlighted via + putting a face on the first character that goes + beyond the `whitespace-line-column' column. + It has effect only if `lines' or + `lines-tail' (see above) is not present + in `whitespace-style' and if `face' (see + above) is present in `whitespace-style'. + newline NEWLINEs are visualized via faces. It has effect only if `face' (see above) is present in `whitespace-style'. @@ -431,6 +440,7 @@ See also `whitespace-display-mappings' for documentation." (const :tag "(Face) SPACEs and HARD SPACEs" spaces) (const :tag "(Face) Lines" lines) (const :tag "(Face) Lines, only overlong part" lines-tail) + (const :tag "(Face) Lines, only first character" lines-char) (const :tag "(Face) NEWLINEs" newline) (const :tag "(Face) Missing newlines at EOB" missing-newline-at-eof) @@ -772,7 +782,8 @@ Used when `whitespace-style' includes `big-indent'." It must be an integer or nil. If nil, the `fill-column' variable value is used. -Used when `whitespace-style' includes `lines' or `lines-tail'." +Used when `whitespace-style' includes `lines', `lines-tail' or +`lines-char'." :type '(choice :tag "Line Length Limit" (integer :tag "Line Length") (const :tag "Use fill-column" nil)) @@ -1058,6 +1069,7 @@ See also `whitespace-newline' and `whitespace-display-mappings'." trailing lines lines-tail + lines-char newline empty indentation @@ -1085,6 +1097,7 @@ See also `whitespace-newline' and `whitespace-display-mappings'." (?r . trailing) (?l . lines) (?L . lines-tail) + (?\C-l . lines-char) (?n . newline) (?e . empty) (?\C-i . indentation) @@ -1244,6 +1257,7 @@ Interactively, it accepts one of the following chars: r toggle trailing blanks visualization l toggle \"long lines\" visualization L toggle \"long lines\" tail visualization + C-l toggle \"long lines\" one character visualization n toggle NEWLINE visualization e toggle empty line at bob and/or eob visualization C-i toggle indentation SPACEs visualization (via `indent-tabs-mode') @@ -1274,6 +1288,7 @@ The valid symbols are: trailing toggle trailing blanks visualization lines toggle \"long lines\" visualization lines-tail toggle \"long lines\" tail visualization + lines-char toggle \"long lines\" one character visualization newline toggle NEWLINE visualization empty toggle empty line at bob and/or eob visualization indentation toggle indentation SPACEs visualization @@ -1770,6 +1785,7 @@ cleaning up these problems." [] r - toggle trailing blanks visualization [] l - toggle \"long lines\" visualization [] L - toggle \"long lines\" tail visualization + [] C-l - toggle \"long lines\" one character visualization [] n - toggle NEWLINE visualization [] e - toggle empty line at bob and/or eob visualization [] C-i - toggle indentation SPACEs visualization (via `indent-tabs-mode') @@ -1892,6 +1908,7 @@ It accepts one of the following chars: r toggle trailing blanks visualization l toggle \"long lines\" visualization L toggle \"long lines\" tail visualization + C-l toggle \"long lines\" one character visualization n toggle NEWLINE visualization e toggle empty line at bob and/or eob visualization C-i toggle indentation SPACEs visualization (via `indent-tabs-mode') @@ -2020,6 +2037,7 @@ resultant list will be returned." (memq 'trailing whitespace-active-style) (memq 'lines whitespace-active-style) (memq 'lines-tail whitespace-active-style) + (memq 'lines-char whitespace-active-style) (memq 'newline whitespace-active-style) (memq 'empty whitespace-active-style) (memq 'indentation whitespace-active-style) @@ -2066,12 +2084,17 @@ resultant list will be returned." ;; Show trailing blanks. `((,#'whitespace-trailing-regexp 1 whitespace-trailing t))) ,@(when (or (memq 'lines whitespace-active-style) - (memq 'lines-tail whitespace-active-style)) + (memq 'lines-tail whitespace-active-style) + (memq 'lines-char whitespace-active-style)) ;; Show "long" lines. `((,#'whitespace-lines-regexp - ,(if (memq 'lines whitespace-active-style) - 0 ; whole line - 2) ; line tail + ,(cond + ;; whole line + ((memq 'lines whitespace-active-style) 0) + ;; line tail + ((memq 'lines-tail whitespace-active-style) 2) + ;; first overflowing character + ((memq 'lines-char whitespace-active-style) 3)) whitespace-line prepend))) ,@(when (or (memq 'space-before-tab whitespace-active-style) (memq 'space-before-tab::tab whitespace-active-style) @@ -2182,7 +2205,7 @@ resultant list will be returned." (re-search-forward (let ((line-column (or whitespace-line-column fill-column))) (format - "^\\([^\t\n]\\{%s\\}\\|[^\t\n]\\{0,%s\\}\t\\)\\{%d\\}%s\\(.+\\)$" + "^\\([^\t\n]\\{%s\\}\\|[^\t\n]\\{0,%s\\}\t\\)\\{%d\\}%s\\(?2:\\(?3:.\\).*\\)$" tab-width (1- tab-width) (/ line-column tab-width) -- 2.39.2