(require 'gnus)
-(defcustom gnus-use-correct-string-widths nil
- "*If non-nil, use correct functions for dealing with wide characters."
- :version "22.1"
- :group 'gnus-format
- :type 'boolean)
-
-(defcustom gnus-make-format-preserve-properties nil
- "*If non-nil, use a replacement `format' function which preserves
-text properties. This is only needed on XEmacs, as Emacs does this anyway."
- :version "22.1"
- :group 'gnus-format
- :type 'boolean)
-
;;; Internal variables.
(defvar gnus-summary-mark-positions nil)
(setq wend seek)
(substring string wstart (1- wend))))
-(defun gnus-string-width-function ()
- (cond
- (gnus-use-correct-string-widths
- 'gnus-correct-length)
- ((fboundp 'string-width)
- 'string-width)
- (t
- 'length)))
-
-(defun gnus-substring-function ()
- (cond
- (gnus-use-correct-string-widths
- 'gnus-correct-substring)
- ((fboundp 'string-width)
- 'gnus-correct-substring)
- (t
- 'substring)))
-
(defun gnus-tilde-max-form (el max-width)
"Return a form that limits EL to MAX-WIDTH."
- (let ((max (abs max-width))
- (length-fun (gnus-string-width-function))
- (substring-fun (gnus-substring-function)))
+ (let ((max (abs max-width)))
(if (symbolp el)
- `(if (> (,length-fun ,el) ,max)
+ `(if (> (string-width ,el) ,max)
,(if (< max-width 0)
- `(,substring-fun ,el (- (,length-fun ,el) ,max))
+ `(gnus-correct-substring ,el (- (string-width ,el) ,max))
`(if (gnus-lrm-string-p ,el)
- (concat (,substring-fun ,el 0 ,max) ,gnus-lrm-string)
- (,substring-fun ,el 0 ,max)))
+ (concat (gnus-correct-substring ,el 0 ,max)
+ ,gnus-lrm-string)
+ (gnus-correct-substring ,el 0 ,max)))
,el)
`(let ((val (eval ,el)))
- (if (> (,length-fun val) ,max)
+ (if (> (string-width val) ,max)
,(if (< max-width 0)
- `(,substring-fun val (- (,length-fun val) ,max))
+ `(gnus-correct-substring val (- (string-width val) ,max))
`(if (gnus-lrm-string-p val)
- (concat (,substring-fun val 0 ,max) ,gnus-lrm-string)
- (,substring-fun val 0 ,max)))
+ (concat (gnus-correct-substring val 0 ,max)
+ ,gnus-lrm-string)
+ (gnus-correct-substring val 0 ,max)))
val)))))
(defun gnus-tilde-cut-form (el cut-width)
"Return a form that cuts CUT-WIDTH off of EL."
- (let ((cut (abs cut-width))
- (length-fun (gnus-string-width-function))
- (substring-fun (gnus-substring-function)))
+ (let ((cut (abs cut-width)))
(if (symbolp el)
- `(if (> (,length-fun ,el) ,cut)
+ `(if (> (string-width ,el) ,cut)
,(if (< cut-width 0)
- `(,substring-fun ,el 0 (- (,length-fun ,el) ,cut))
- `(,substring-fun ,el ,cut))
+ `(gnus-correct-substring ,el 0 (- (string-width ,el) ,cut))
+ `(gnus-correct-substring ,el ,cut))
,el)
`(let ((val (eval ,el)))
- (if (> (,length-fun val) ,cut)
+ (if (> (string-width val) ,cut)
,(if (< cut-width 0)
- `(,substring-fun val 0 (- (,length-fun val) ,cut))
- `(,substring-fun val ,cut))
+ `(gnus-correct-substring val 0 (- (string-width val) ,cut))
+ `(gnus-correct-substring val ,cut))
val)))))
(defun gnus-tilde-ignore-form (el ignore-value)
characters correctly. This is because `format' may pad to columns or to
characters when given a pad value."
(let ((pad (abs pad-width))
- (side (< 0 pad-width))
- (length-fun (gnus-string-width-function)))
+ (side (< 0 pad-width)))
(if (symbolp el)
- `(let ((need (- ,pad (,length-fun ,el))))
+ `(let ((need (- ,pad (string-width ,el))))
(if (> need 0)
(concat ,(when side '(make-string need ?\ ))
,el
,(when (not side) '(make-string need ?\ )))
,el))
`(let* ((val (eval ,el))
- (need (- ,pad (,length-fun val))))
+ (need (- ,pad (string-width val))))
(if (> need 0)
(concat ,(when side '(make-string need ?\ ))
val
(nth 1 sform)))))
form)))
-
-(defun gnus-xmas-format (fstring &rest args)
- "A version of `format' which preserves text properties.
-
-Required for XEmacs, where the built in `format' function strips all text
-properties from both the format string and any inserted strings.
-
-Only supports the format sequence %s, and %% for inserting
-literal % characters. A pad width and an optional - (to right pad)
-are supported for %s."
- (let ((re "%%\\|%\\(-\\)?\\([1-9][0-9]*\\)?s")
- (n (length args)))
- (with-temp-buffer
- (insert fstring)
- (goto-char (point-min))
- (while (re-search-forward re nil t)
- (goto-char (match-end 0))
- (cond
- ((string= (match-string 0) "%%")
- (delete-char -1))
- (t
- (if (null args)
- (signal 'wrong-number-of-arguments
- (list #'gnus-xmas-format n fstring)))
- (let* ((minlen (string-to-number (or (match-string 2) "")))
- (arg (car args))
- (str (if (stringp arg) arg (format "%s" arg)))
- (lpad (null (match-string 1)))
- (padlen (max 0 (- minlen (length str)))))
- (replace-match "")
- (if lpad (insert-char ?\ padlen))
- (insert str)
- (unless lpad (insert-char ?\ padlen))
- (setq args (cdr args))))))
- (buffer-string))))
-
(defun gnus-parse-simple-format (format spec-alist &optional insert)
;; This function parses the FORMAT string with the help of the
;; SPEC-ALIST and returns a list that can be eval'ed to return a
(setq elem '("*" ?s))))
(setq elem-type (cadr elem))
;; Insert the new format elements.
- (when (and pad-width
- (not (and (featurep 'xemacs)
- gnus-use-correct-string-widths)))
+ (when pad-width
(insert (number-to-string pad-width)))
;; Create the form to be evalled.
- (if (or max-width cut-width ignore-value
- (and (featurep 'xemacs)
- gnus-use-correct-string-widths))
+ (if (or max-width cut-width ignore-value)
(progn
(insert ?s)
(let ((el (car elem)))
;; A single string spec in the end of the spec.
((string-match "\\`\\([^%]+\\)%[sc]\\'" fstring)
(list (match-string 1 fstring) (car flist)))
- ;; Only string (and %) specs (XEmacs only!)
- ((and (featurep 'xemacs)
- gnus-make-format-preserve-properties
- (string-match
- "\\`\\([^%]*\\(%%\\|%-?\\([1-9][0-9]*\\)?s\\)\\)*[^%]*\\'"
- fstring))
- (list (cons 'gnus-xmas-format (cons fstring (nreverse flist)))))
;; A more complex spec.
(t
(list (cons 'format (cons fstring (nreverse flist)))))))
projects / emacs.git / commitdiff