org-capture: Prevent recursive evaluation of %(...) placeholders
* lisp/org-capture.el (org-capture-templates): Improve docstring. (org-capture-fill-template): Prevent recursive evaluation of %(...) placeholders. Fix escaping of % character in templates. * testing/lisp/test-org-capture.el: New file. Reported-by: Thomas Preindl <thomas.preindl@gmail.com> <http://permalink.gmane.org/gmane.emacs.orgmode/103018>
This commit is contained in:
Nicolas Goaziou
parent
bd79085be0
commit
bd3a2cbf2f
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@ -104,6 +104,15 @@ Org files.
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The new algorithm doesn't remove TAB characters not used for
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indentation.
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*** Secure placeholders in capture templates
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Placeholders in capture templates are no longer expanded recursively.
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However, ~%(...)~ constructs are expanded very late, so you can still
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fill the contents of the S-exp with the replacement text of other
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placeholders.
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Only ~%(...)~ placeholders initially present are expanded. This
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prevents evaluating potentially malicious code when another placehold,
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e.g., ~%i~ expands to a S-exp.
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*** ~org-babel-check-confirm-evaluate~ is now a function instead of a macro
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The calling convention has changed.
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@ -219,15 +219,20 @@ properties are:
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is finalized.
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The template defines the text to be inserted. Often this is an
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org-mode entry (so the first line should start with a star) that
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Org mode entry (so the first line should start with a star) that
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will be filed as a child of the target headline. It can also be
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freely formatted text. Furthermore, the following %-escapes will
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be replaced with content and expanded in this order:
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be replaced with content and expanded:
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%[pathname] Insert the contents of the file given by `pathname'.
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%[pathname] Insert the contents of the file given by
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`pathname'. These placeholders are expanded at the very
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beginning of the process so they can be used to extend the
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current template.
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%(sexp) Evaluate elisp `(sexp)' and replace it with the results.
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For convenience, %:keyword (see below) placeholders within
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the expression will be expanded prior to this.
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Only placeholders pre-existing within the template, or
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introduced with %[pathname] are expanded this way. Since this
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happens very late in the process, other %-escapes can be used to
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fill the expression.
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%<...> The result of format-time-string on the ... format specification.
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%t Time stamp, date only.
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%T Time stamp with date and time.
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@ -256,8 +261,9 @@ be replaced with content and expanded in this order:
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A default value and a completion table ca be specified like this:
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%^{prompt|default|completion2|completion3|...}.
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%? After completing the template, position cursor here.
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%\\n Insert the text entered at the nth %^{prompt}, where `n' is
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a number, starting from 1.
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%number Insert the text entered at the nth %^{prompt}, where `number' is a
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number, starting from 1. These placeholders are expanded as the
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last step of the process.
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Apart from these general escapes, you can access information specific to
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the link type that is created. For example, calling `org-capture' in emails
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@ -277,7 +283,10 @@ gnus | %:from %:fromname %:fromaddress
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gnus | %:group, for messages also all email fields
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w3, w3m | %:type %:url
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info | %:type %:file %:node
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calendar | %:type %:date"
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calendar | %:type %:date
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When you need to insert a literal percent sign in the template,
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you can escape ambiguous cases with a backward slash, e.g., \\%i."
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:group 'org-capture
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:version "24.1"
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:type
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@ -1536,7 +1545,7 @@ The template may still contain \"%?\" for cursor positioning."
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(if (< (nth 2 dct) org-extend-today-until)
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(encode-time 0 59 23 (1- (nth 3 dct)) (nth 4 dct) (nth 5 dct))
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ct))
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(plist-p (if org-store-link-plist t nil))
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(plist-p org-store-link-plist)
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(v-c (and (> (length kill-ring) 0) (current-kill 0)))
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(v-x (or (org-get-x-clipboard 'PRIMARY)
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(org-get-x-clipboard 'CLIPBOARD)
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@ -1545,8 +1554,8 @@ The template may still contain \"%?\" for cursor positioning."
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(v-T (format-time-string (cdr org-time-stamp-formats) ct1))
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(v-u (concat "[" (substring v-t 1 -1) "]"))
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(v-U (concat "[" (substring v-T 1 -1) "]"))
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;; `initial' and `annotation' might habe been passed.
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;; But if the property list has them, we prefer those values
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;; `initial' and `annotation' might have been passed. But if
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;; the property list has them, we prefer those values.
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(v-i (or (plist-get org-store-link-plist :initial)
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initial
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(org-capture-get :initial)
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@ -1557,11 +1566,11 @@ The template may still contain \"%?\" for cursor positioning."
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""))
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;; Is the link empty? Then we do not want it...
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(v-a (if (equal v-a "[[]]") "" v-a))
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(clipboards (remove nil (list v-i
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(org-get-x-clipboard 'PRIMARY)
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(org-get-x-clipboard 'CLIPBOARD)
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(org-get-x-clipboard 'SECONDARY)
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v-c)))
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(clipboards (remq nil (list v-i
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(org-get-x-clipboard 'PRIMARY)
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(org-get-x-clipboard 'CLIPBOARD)
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(org-get-x-clipboard 'SECONDARY)
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v-c)))
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(l-re "\\[\\[\\(.*?\\)\\]\\(\\[.*?\\]\\)?\\]")
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(v-A (if (and v-a (string-match l-re v-a))
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(replace-match "[[\\1][%^{Link description}]]" nil nil v-a)
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@ -1570,203 +1579,233 @@ The template may still contain \"%?\" for cursor positioning."
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(replace-match "\\1" nil nil v-a)
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v-a))
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(v-n user-full-name)
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(v-k (if (marker-buffer org-clock-marker)
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(org-no-properties org-clock-heading)))
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(v-k (and (marker-buffer org-clock-marker)
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(org-no-properties org-clock-heading)))
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(v-K (if (marker-buffer org-clock-marker)
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(org-make-link-string
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(buffer-file-name (marker-buffer org-clock-marker))
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org-clock-heading)))
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(v-f (or (org-capture-get :original-file-nondirectory) ""))
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(v-F (or (org-capture-get :original-file) ""))
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v-I
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(org-startup-folded nil)
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(org-inhibit-startup t)
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org-time-was-given org-end-time-was-given x
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prompt completions char time pos default histvar strings)
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strings)
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(setq org-store-link-plist
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(plist-put org-store-link-plist :annotation v-a)
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org-store-link-plist
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(plist-put org-store-link-plist :initial v-i))
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(setq org-store-link-plist (plist-put org-store-link-plist :annotation v-a))
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(setq org-store-link-plist (plist-put org-store-link-plist :initial v-i))
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(setq initial v-i)
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(unless template (setq template "") (message "No template") (ding)
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(sit-for 1))
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(unless template
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(setq template "")
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(message "no template") (ding)
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(sit-for 1))
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(save-window-excursion
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(org-switch-to-buffer-other-window (get-buffer-create "*Capture*"))
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(erase-buffer)
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;; Turn on org-mode in temp buffer, set local variables. This
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;; is to support completion in interactive prompts
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(let ((org-inhibit-startup t)) (org-mode))
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(insert template)
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(goto-char (point-min))
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(org-capture-steal-local-variables buffer)
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(setq buffer-file-name nil mark-active nil)
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(setq buffer-file-name nil)
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(setq mark-active nil)
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;; %[] Insert contents of a file.
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(goto-char (point-min))
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(while (re-search-forward "%\\[\\(.+\\)\\]" nil t)
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(unless (org-capture-escaped-%)
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(let ((start (match-beginning 0))
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(end (match-end 0))
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(filename (expand-file-name (match-string 1))))
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(goto-char start)
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(delete-region start end)
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(condition-case error
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(insert-file-contents filename)
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(error (insert (format "%%![Couldn not insert %s: %s]"
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filename error)))))))
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;; The current time
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(goto-char (point-min))
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(while (re-search-forward "%<\\([^>\n]+\\)>" nil t)
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(replace-match (format-time-string (match-string 1)) t t))
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;; Simple %-escapes
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(goto-char (point-min))
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(while (re-search-forward "%\\([tTuUaliAcxkKInfF]\\)" nil t)
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(unless (org-capture-escaped-%)
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(when (and initial (equal (match-string 0) "%i"))
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(save-match-data
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(let* ((lead (buffer-substring
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(point-at-bol) (match-beginning 0))))
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(setq v-i (mapconcat 'identity
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(org-split-string initial "\n")
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(concat "\n" lead))))))
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(replace-match (or (eval (intern (concat "v-" (match-string 1)))) "")
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t t)))
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;; From the property list
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(when plist-p
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(goto-char (point-min))
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(while (re-search-forward "%\\(:[-a-zA-Z]+\\)" nil t)
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;; %[] insert contents of a file.
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(save-excursion
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(while (re-search-forward "%\\[\\(.+\\)\\]" nil t)
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(unless (org-capture-escaped-%)
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(and (setq x (or (plist-get org-store-link-plist
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(intern (match-string 1))) ""))
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(replace-match x t t)))))
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(let ((start (match-beginning 0))
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(end (match-end 0))
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(filename (expand-file-name (match-string 1))))
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(goto-char start)
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(delete-region start end)
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(condition-case error
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(insert-file-contents filename)
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(error (insert (format "%%![couldn not insert %s: %s]"
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filename
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error))))))))
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;; %() embedded elisp
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(goto-char (point-min))
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(org-capture-expand-embedded-elisp)
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;; Mark %() embedded elisp for later evaluation.
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(org-capture--expand-embedded-elisp 'mark)
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;; Turn on org-mode in temp buffer, set local variables
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;; This is to support completion in interactive prompts
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(let ((org-inhibit-startup t)) (org-mode))
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;; Interactive template entries
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(goto-char (point-min))
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(while (re-search-forward "%^\\({\\([^}]*\\)}\\)?\\([gGtTuUCLp]\\)?" nil t)
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(unless (org-capture-escaped-%)
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(setq char (if (match-end 3) (match-string-no-properties 3))
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prompt (if (match-end 2) (match-string-no-properties 2)))
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(goto-char (match-beginning 0))
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(replace-match "")
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(setq completions nil default nil)
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(when prompt
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(setq completions (org-split-string prompt "|")
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prompt (pop completions)
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default (car completions)
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histvar (intern (concat
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"org-capture-template-prompt-history::"
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(or prompt "")))
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completions (mapcar 'list completions)))
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(unless (boundp histvar) (set histvar nil))
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(cond
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((member char '("G" "g"))
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(let* ((org-last-tags-completion-table
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(org-global-tags-completion-table
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(if (equal char "G")
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(org-agenda-files)
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(and file (list file)))))
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(org-add-colon-after-tag-completion t)
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(ins (org-icompleting-read
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(if prompt (concat prompt ": ") "Tags: ")
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'org-tags-completion-function nil nil nil
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'org-tags-history)))
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(setq ins (mapconcat 'identity
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(let ((regexp "%\\(:[-a-za-z]+\\|<\\([^>\n]+\\)>\\|[aAcfFikKlntTuUx]\\|\
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^\\(?:{\\([^}]*\\)}\\)?\\([CgGLptTuU]\\)?\\)")
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(strings))
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(while (re-search-forward regexp nil t)
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(let ((pos (copy-marker (match-beginning 0)))
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(end (copy-marker (match-end 0)))
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(value (match-string 1))
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(time-string (match-string 2))
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(prompt (match-string-no-properties 3))
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(key (match-string 4)))
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(unless (org-capture-escaped-%)
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(goto-char pos)
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(delete-region pos end)
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(pcase (string-to-char value)
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(?<
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;; The current time.
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(insert (format-time-string time-string)))
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(?:
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;; From the property list.
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(insert (or (plist-get org-store-link-plist (intern value))
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"")))
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(?i (let ((lead (buffer-substring-no-properties
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(line-beginning-position) pos)))
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(insert (mapconcat #'identity
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(split-string initial "\n")
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(concat "\n" lead)))))
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(?^
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;; Interactive template entries.
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(let ((completions nil)
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(default nil)
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(histvar nil))
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(when prompt
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(setq completions (org-split-string prompt "|"))
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(setq prompt (pop completions))
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(setq default (car completions))
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(setq histvar
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(intern (concat
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"org-capture-template-prompt-history::"
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(or prompt ""))))
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(setq completions (mapcar #'list completions)))
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(pcase (string-to-char key)
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((or ?G ?g)
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(let* ((org-last-tags-completion-table
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(org-global-tags-completion-table
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(cond ((equal key "G") (org-agenda-files))
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(file (list file))
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(t nil))))
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(org-add-colon-after-tag-completion t)
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(ins (mapconcat
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#'identity
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(org-split-string
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ins (org-re "[^[:alnum:]_@#%]+"))
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":"))
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(when (string-match "\\S-" ins)
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(or (equal (char-before) ?:) (insert ":"))
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(insert ins)
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(or (equal (char-after) ?:) (insert ":"))
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(and (org-at-heading-p)
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(let ((org-ignore-region t))
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(org-set-tags nil 'align))))))
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((equal char "C")
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(cond ((= (length clipboards) 1) (insert (car clipboards)))
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((> (length clipboards) 1)
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(insert (read-string "Clipboard/kill value: "
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(car clipboards) '(clipboards . 1)
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(car clipboards))))))
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((equal char "L")
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(cond ((= (length clipboards) 1)
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(org-insert-link 0 (car clipboards)))
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((> (length clipboards) 1)
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(org-insert-link 0 (read-string "Clipboard/kill value: "
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(car clipboards)
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'(clipboards . 1)
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(car clipboards))))))
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((equal char "p")
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(org-set-property (org-no-properties prompt) nil))
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(char
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;; These are the date/time related ones
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(setq org-time-was-given (equal (upcase char) char))
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(setq time (org-read-date (equal (upcase char) char) t nil
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prompt))
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(if (equal (upcase char) char) (setq org-time-was-given t))
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(org-insert-time-stamp time org-time-was-given
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(member char '("u" "U"))
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nil nil (list org-end-time-was-given)))
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(t
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(let (org-completion-use-ido)
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(push (org-completing-read-no-i
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(concat (if prompt prompt "Enter string")
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(if default (concat " [" default "]"))
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": ")
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completions nil nil nil histvar default)
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strings)
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(insert (car strings)))))))
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;; Replace %n escapes with nth %^{...} string
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(completing-read
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(if prompt (concat prompt ": ") "Tags: ")
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'org-tags-completion-function nil nil nil
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'org-tags-history)
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"[^[:alnum:]_@#%]+")
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":")))
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(when (org-string-nw-p ins)
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(unless (eq (char-before) ?:) (insert ":"))
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(insert ins)
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(unless (eq (char-after) ?:) (insert ":"))
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(and (org-at-heading-p)
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(let ((org-ignore-region t))
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(org-set-tags nil 'align))))))
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(?C
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(cond
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((= (length clipboards) 1) (insert (car clipboards)))
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((> (length clipboards) 1)
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(insert (read-string "Clipboard/kill value: "
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(car clipboards)
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'(clipboards . 1)
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(car clipboards))))))
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(?L
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(cond ((= (length clipboards) 1)
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(org-insert-link 0 (car clipboards)))
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((> (length clipboards) 1)
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(org-insert-link
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0
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(read-string "Clipboard/kill value: "
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(car clipboards)
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'(clipboards . 1)
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(car clipboards))))))
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(?p (org-set-property prompt nil))
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((guard key)
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;; These are the date/time related ones.
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(let* ((upcase? (equal (upcase key) key))
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(org-time-was-given upcase?)
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(org-end-time-was-given)
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(time (org-read-date upcase? t nil prompt)))
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(org-insert-time-stamp
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time org-time-was-given
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(member key '("u" "U"))
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nil nil (list org-end-time-was-given))))
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(t
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(push (completing-read
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(concat (or prompt "Enter string")
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(and default (format " [%s]" default))
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": ")
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completions nil nil nil histvar default)
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strings)
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(insert (car strings))))))
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(?a (insert v-a))
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(?A (insert v-A))
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(?c (insert v-c))
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(?f (insert v-f))
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(?F (insert v-F))
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(?k (insert v-k))
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(?K (insert v-K))
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(?l (insert v-l))
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(?t (insert v-t))
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(?T (insert v-T))
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(?u (insert v-u))
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(?U (insert v-U))
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(?x (insert v-x)))
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(set-marker pos nil)
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(set-marker end nil)))))
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;; Replace %n escapes with nth %^{...} string.
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(setq strings (nreverse strings))
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(goto-char (point-min))
|
||||
(while (re-search-forward "%\\\\\\([1-9][0-9]*\\)" nil t)
|
||||
(unless (org-capture-escaped-%)
|
||||
(replace-match
|
||||
(nth (1- (string-to-number (match-string 1))) strings)
|
||||
nil t)))
|
||||
(save-excursion
|
||||
(while (re-search-forward "%\\\\\\([1-9][0-9]*\\)" nil t)
|
||||
(unless (org-capture-escaped-%)
|
||||
(replace-match
|
||||
(nth (1- (string-to-number (match-string 1))) strings)
|
||||
nil t))))
|
||||
|
||||
;; Expand %() embedded Elisp. Limit to Sexp originally marked.
|
||||
(org-capture--expand-embedded-elisp)
|
||||
|
||||
;; Make sure there are no empty lines before the text, and that
|
||||
;; it ends with a newline character
|
||||
;; it ends with a newline character.
|
||||
(goto-char (point-min))
|
||||
(while (looking-at "[ \t]*\n") (replace-match ""))
|
||||
(if (re-search-forward "[ \t\n]*\\'" nil t) (replace-match "\n"))
|
||||
;; Return the expanded template and kill the temporary buffer
|
||||
(when (re-search-forward "[ \t\n]*\\'" nil t) (replace-match "\n"))
|
||||
;; Return the expanded template and kill the temporary buffer.
|
||||
(untabify (point-min) (point-max))
|
||||
(set-buffer-modified-p nil)
|
||||
(prog1 (buffer-string) (kill-buffer (current-buffer))))))
|
||||
(prog1 (buffer-substring-no-properties (point-min) (point-max))
|
||||
(kill-buffer (current-buffer))))))
|
||||
|
||||
(defun org-capture-escaped-% ()
|
||||
"Check if % was escaped - if yes, unescape it now."
|
||||
(if (equal (char-before (match-beginning 0)) ?\\)
|
||||
(progn
|
||||
(delete-region (1- (match-beginning 0)) (match-beginning 0))
|
||||
t)
|
||||
nil))
|
||||
"Non-nil if % was escaped.
|
||||
If yes, unescape it now. Assume match-data contains the
|
||||
placeholder to check."
|
||||
(save-excursion
|
||||
(goto-char (match-beginning 0))
|
||||
(let ((n (abs (skip-chars-backward "\\\\"))))
|
||||
(delete-char (/ (1+ n) 2))
|
||||
(= (% n 2) 1))))
|
||||
|
||||
(defun org-capture-expand-embedded-elisp ()
|
||||
"Evaluate embedded elisp %(sexp) and replace with the result."
|
||||
(goto-char (point-min))
|
||||
(while (re-search-forward "%(" nil t)
|
||||
(unless (org-capture-escaped-%)
|
||||
(goto-char (match-beginning 0))
|
||||
(let ((template-start (point)))
|
||||
(forward-char 1)
|
||||
(let* ((sexp (read (current-buffer)))
|
||||
(result (org-eval
|
||||
(org-capture--expand-keyword-in-embedded-elisp sexp))))
|
||||
(delete-region template-start (point))
|
||||
(when result
|
||||
(if (stringp result)
|
||||
(insert result)
|
||||
(error "Capture template sexp `%s' must evaluate to string or nil"
|
||||
sexp))))))))
|
||||
(defun org-capture--expand-embedded-elisp (&optional mark)
|
||||
"Evaluate embedded elisp %(sexp) and replace with the result.
|
||||
When optional MARK argument is non-nil, mark Sexp with a text
|
||||
property (`org-embedded-elisp') for later evaluation. Only
|
||||
marked Sexp are evaluated when this argument is nil."
|
||||
(save-excursion
|
||||
(goto-char (point-min))
|
||||
(while (re-search-forward "%(" nil t)
|
||||
(unless (org-capture-escaped-%)
|
||||
(if mark
|
||||
(put-text-property
|
||||
(match-beginning 0) (match-end 0) 'org-embedded-elisp t)
|
||||
(when (get-text-property (match-beginning 0) 'org-embedded-elisp)
|
||||
(goto-char (match-beginning 0))
|
||||
(let ((template-start (point)))
|
||||
(forward-char 1)
|
||||
(let* ((sexp (read (current-buffer)))
|
||||
(result (org-eval
|
||||
(org-capture--expand-keyword-in-embedded-elisp
|
||||
sexp))))
|
||||
(delete-region template-start (point))
|
||||
(when result
|
||||
(if (stringp result)
|
||||
(insert result)
|
||||
(error
|
||||
"Capture template sexp `%s' must evaluate to string or nil"
|
||||
sexp)))))))))))
|
||||
|
||||
(defun org-capture--expand-keyword-in-embedded-elisp (attr)
|
||||
"Recursively replace capture link keywords in ATTR sexp.
|
||||
|
|
|
|||
|
|
@ -0,0 +1,82 @@
|
|||
;;; test-org-capture.el --- Tests for org-capture.el -*- lexical-binding: t; -*-
|
||||
|
||||
;; Copyright (C) 2015 Nicolas Goaziou
|
||||
|
||||
;; Author: Nicolas Goaziou <mail@nicolasgoaziou.fr>
|
||||
|
||||
;; This program is free software; you can redistribute it and/or modify
|
||||
;; it under the terms of the GNU General Public License as published by
|
||||
;; the Free Software Foundation, either version 3 of the License, or
|
||||
;; (at your option) any later version.
|
||||
|
||||
;; This program is distributed in the hope that it will be useful,
|
||||
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
;; GNU General Public License for more details.
|
||||
|
||||
;; You should have received a copy of the GNU General Public License
|
||||
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
;;; Commentary:
|
||||
|
||||
;; Unit tests for Org Capture library.
|
||||
|
||||
;;; Code:
|
||||
|
||||
(require 'org-capture)
|
||||
|
||||
(ert-deftest test-org-capture/fill-template ()
|
||||
"Test `org-capture-fill-template' specifications."
|
||||
;; %(sexp) placeholder.
|
||||
(should
|
||||
(equal "success!\n"
|
||||
(org-capture-fill-template "%(concat \"success\" \"!\")")))
|
||||
;; %<...> placeholder.
|
||||
(should
|
||||
(equal (concat (format-time-string "%Y") "\n")
|
||||
(org-capture-fill-template "%<%Y>")))
|
||||
;; %t and %T placeholders.
|
||||
(should
|
||||
(equal (concat (format-time-string (car org-time-stamp-formats)) "\n")
|
||||
(org-capture-fill-template "%t")))
|
||||
(should
|
||||
(equal (concat (format-time-string (cdr org-time-stamp-formats)) "\n")
|
||||
(org-capture-fill-template "%T")))
|
||||
;; %u and %U placeholders.
|
||||
(should
|
||||
(string-match-p
|
||||
(format-time-string (substring (car org-time-stamp-formats) 1 -1))
|
||||
(org-capture-fill-template "%u")))
|
||||
(should
|
||||
(string-match-p
|
||||
(format-time-string (substring (cdr org-time-stamp-formats) 1 -1))
|
||||
(org-capture-fill-template "%U")))
|
||||
;; %i placeholder. Make sure sexp placeholders are not expanded
|
||||
;; when they are inserted through this one.
|
||||
(should
|
||||
(equal "success!\n"
|
||||
(let ((org-store-link-plist nil))
|
||||
(org-capture-fill-template "%i" "success!"))))
|
||||
(should-not
|
||||
(equal "failure!\n"
|
||||
(let ((org-store-link-plist nil))
|
||||
(org-capture-fill-template "%i" "%(concat \"failure\" \"!\")"))))
|
||||
;; Test %-escaping with / character.
|
||||
(should
|
||||
(equal "%i\n"
|
||||
(let ((org-store-link-plist nil))
|
||||
(org-capture-fill-template "\\%i" "success!"))))
|
||||
(should
|
||||
(equal "\\success!\n"
|
||||
(let ((org-store-link-plist nil))
|
||||
(org-capture-fill-template "\\\\%i" "success!"))))
|
||||
(should
|
||||
(equal "\\%i\n"
|
||||
(let ((org-store-link-plist nil))
|
||||
(org-capture-fill-template "\\\\\\%i" "success!")))))
|
||||
|
||||
|
||||
|
||||
|
||||
(provide 'test-org-capture)
|
||||
;;; test-org-capture.el ends here
|
||||
Loading…
Reference in New Issue