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emacs: In search mode, truncate authors using invisible text.

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Rather than discarding authors when truncated to fit the defined
column width, mark the text beyond the end of the column as invisible
and allow `isearch' to be used over the text so hidden.

This allows us to retain the compact display whilst enabling a user to
find the elided text.
This commit is contained in:
David Edmondson 2010-05-19 08:03:37 +01:00 committed by Carl Worth
parent f2525ed18f
commit 17b09af228
1 changed files with 45 additions and 16 deletions
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61
emacs/notmuch.el
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@ -608,23 +608,52 @@ matching will be applied."
(t
(setq tags-faces (cdr tags-faces)))))))))
(defun notmuch-search-isearch-authors-show (overlay)
(remove-from-invisibility-spec (cons (overlay-get overlay 'invisible) t)))
(defun notmuch-search-insert-authors (format-string authors)
(insert (let* ((formatted-sample (format format-string ""))
(formatted-authors (format format-string authors))
(truncated-string
(if (> (length formatted-authors)
(length formatted-sample))
(concat (substring authors 0 (- (length formatted-sample) 4)) "... ")
formatted-authors)))
;; Need to save the match data to avoid interfering with
;; `notmuch-search-process-filter'.
(save-match-data
(if (string-match "\\(.*\\)|\\(..*\\)" truncated-string)
(concat (propertize (concat (match-string 1 truncated-string) ",")
'face 'notmuch-search-matching-authors)
(propertize (match-string 2 truncated-string)
'face 'notmuch-search-non-matching-authors))
(propertize truncated-string 'face 'notmuch-search-matching-authors))))))
(let* ((propertized-authors
;; Need to save the match data to avoid interfering with
;; `notmuch-search-process-filter'.
(save-match-data
;; Authors that don't match the search query are shown in a
;; different font.
(if (string-match "\\(.*\\)|\\(..*\\)" authors)
(concat (propertize (concat (match-string 1 authors) ",")
'face 'notmuch-search-matching-authors)
(propertize (match-string 2 authors)
'face 'notmuch-search-non-matching-authors))
(propertize authors 'face 'notmuch-search-matching-authors))))
(formatted-sample (format format-string ""))
(formatted-authors (format format-string propertized-authors))
visible-string invisible-string)
;; Determine the part of the authors that will be visible by
;; default.
(if (> (length formatted-authors)
(length formatted-sample))
;; 4 is `(length "... ")'.
(let ((visible-length (- (length formatted-sample) 4)))
(setq visible-string (substring propertized-authors 0 visible-length)
invisible-string (substring propertized-authors visible-length)))
(setq visible-string formatted-authors
invisible-string nil))
;; Insert both the visible and invisible author strings.
(insert visible-string)
(when invisible-string
(let ((start (point))
(invis-spec (make-symbol "notmuch-search-authors"))
overlay)
(insert invisible-string)
;; Using a cons-cell here causes an ellipsis to be inserted
;; instead of the invisible text.
(add-to-invisibility-spec (cons invis-spec t))
(setq overlay (make-overlay start (point)))
(overlay-put overlay 'invisible invis-spec)
(overlay-put overlay 'isearch-open-invisible #'notmuch-search-isearch-authors-show)
(insert " ")))))
(defun notmuch-search-insert-field (field date count authors subject tags)
(cond