Rewrite `org-indent-line'

* lisp/org.el (org--get-expected-indentation,
  org--align-node-property): New functions.
(org-indent-line): Use new function.  Also merge functionalities with
`org-src-native-tab-command-maybe'.

* lisp/org-src.el (org-src-native-tab-command-maybe): Remove function.

* testing/lisp/test-org.el (test-org/indent-line): New test.
This commit is contained in:
Nicolas Goaziou 2013-12-24 14:04:17 +01:00
parent fea672d30e
commit 51ffcd02dd
3 changed files with 330 additions and 119 deletions

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@ -895,17 +895,6 @@ issued in the language major mode buffer."
:version "24.1"
:group 'org-babel)
(defun org-src-native-tab-command-maybe ()
"Perform language-specific TAB action.
Alter code block according to what TAB does in the language major mode."
(and org-src-tab-acts-natively
(org-in-src-block-p)
(not (equal this-command 'org-shifttab))
(let ((org-src-strip-leading-and-trailing-blank-lines nil))
(org-babel-do-key-sequence-in-edit-buffer (kbd "TAB")))))
(add-hook 'org-tab-first-hook 'org-src-native-tab-command-maybe)
(defun org-src-font-lock-fontify-block (lang start end)
"Fontify code block.
This function is called by emacs automatic fontification, as long

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@ -22206,116 +22206,181 @@ hierarchy of headlines by UP levels before marking the subtree."
;;; Indentation
(defun org--get-expected-indentation (element contentsp)
"Expected indentation column for current line, according to ELEMENT.
ELEMENT is an element containing point. CONTENTSP is non-nil
when indentation is to be computed according to contents of
ELEMENT."
(let ((type (org-element-type element))
(start (org-element-property :begin element)))
(org-with-wide-buffer
(cond
(contentsp
(case type
(footnote-definition 0)
((headline inlinetask nil)
(if (not org-adapt-indentation) 0
(let ((level (org-current-level)))
(if level (1+ level) 0))))
((item plain list)
(org-list-item-body-column
(or (org-element-property :post-affiliated element) start)))
(otherwise
(goto-char start)
(org-get-indentation))))
((memq type '(headline inlinetask nil))
(if (save-excursion (beginning-of-line) (looking-at "[ \t]*$"))
(org--get-expected-indentation element t)
0))
((eq type 'footnote-definition) 0)
;; First paragraph of a footnote definition or an item.
;; Indent like parent.
((< (line-beginning-position) start)
(org--get-expected-indentation
(org-element-property :parent element) t))
;; At first line: indent according to previous sibling, if any,
;; ignoring footnote definitions and inline tasks, or parent's
;; contents.
((= (line-beginning-position) start)
(catch 'exit
(while t
(if (= (point-min) start) (throw 'exit 0)
(goto-char (1- start))
(let ((previous (org-element-at-point)))
(while (let ((parent (org-element-property :parent previous)))
(and parent
(setq previous parent)
(<= (org-element-property :end parent) start))))
(cond ((or (not previous)
(> (org-element-property :end previous) start))
(throw 'exit (org--get-expected-indentation previous t)))
((memq (org-element-type previous)
'(footnote-definition inlinetask))
(setq start (org-element-property :begin previous)))
(t (goto-char (org-element-property :begin previous))
(throw 'exit (org-get-indentation)))))))))
;; Otherwise, move to the first non-blank line above.
(t
(beginning-of-line)
(let ((pos (point)))
(skip-chars-backward " \r\t\n")
(cond
;; Two blank lines end a footnote definition or a plain
;; list. When we indent an empty line after them, the
;; containing list or footnote definition is over, so it
;; qualifies as a previous sibling. Therefore, we indent
;; like its first line.
((and (memq type '(footnote-definition plain-list))
(> (count-lines (point) pos) 2))
(goto-char start)
(org-get-indentation))
;; Line above is the first one of a paragraph at the
;; beginning of an item or a footnote definition. Indent
;; like parent.
((< (line-beginning-position) start)
(org--get-expected-indentation
(org-element-property :parent element) t))
;; POS is after contents in a greater element. Indent like
;; the beginning of the element.
;;
;; As a special case, if point is at the end of a footnote
;; definition or an item, indent like the very last element
;; within.
((let ((cend (org-element-property :contents-end element)))
(and cend (<= cend pos)))
(if (memq type '(footnote-definition item plain-list))
(org--get-expected-indentation (org-element-at-point) nil)
(goto-char start)
(org-get-indentation)))
;; In any other case, indent like the current line.
(t (org-get-indentation)))))))))
(defun org--align-node-property ()
"Align node property at point.
Alignment is done according to `org-property-format', which see."
(when (save-excursion
(beginning-of-line)
(looking-at org-property-re))
(replace-match
(concat (match-string 4)
(format org-property-format (match-string 1) (match-string 3)))
t t)))
(defun org-indent-line ()
"Indent line depending on context."
"Indent line depending on context.
Indentation is done according to the following rules:
- Footnote definitions, headlines and inline tasks have to
start at column 0.
- On the very first line of an element, consider, in order, the
next rules until one matches:
1. If there's a sibling element before, ignoring footnote
definitions and inline tasks, indent like its first line.
2. If element has a parent, indent like its contents. More
precisely, if parent is an item, indent after the
description part, if any, or the bullet (see
``org-list-description-max-indent'). Else, indent like
parent's first line.
3. Otherwise, indent relatively to current level, if
`org-adapt-indentation' is non-nil, or to left margin.
- On a blank line at the end of a plain list, an item, or
a footnote definition, indent like the very last element
within.
- In the code part of a source block, use language major mode
to indent current line if `org-src-tab-acts-natively' is
non-nil. If it is nil, do nothing.
- Otherwise, indent like the first non-blank line above.
The function doesn't indent an item as it could break the whole
list structure. Instead, use \\<org-mode-map>\\[org-shiftmetaleft] or \
\\[org-shiftmetaright].
Also align node properties according to `org-property-format'."
(interactive)
(let* ((pos (point))
(itemp (org-at-item-p))
(case-fold-search t)
(org-drawer-regexp (or org-drawer-regexp "\000"))
(inline-task-p (and (featurep 'org-inlinetask)
(org-inlinetask-in-task-p)))
(inline-re (and inline-task-p
(org-inlinetask-outline-regexp)))
column)
(if (and orgstruct-is-++ (eq pos (point)))
(let ((indent-line-function (cadadr (assoc 'indent-line-function org-fb-vars))))
(indent-according-to-mode))
(beginning-of-line 1)
(cond
;; Headings
((looking-at org-outline-regexp) (setq column 0))
;; Footnote definition
((looking-at org-footnote-definition-re) (setq column 0))
;; Literal examples
((looking-at "[ \t]*:\\( \\|$\\)")
(setq column (org-get-indentation))) ; do nothing
;; Lists
((ignore-errors (goto-char (org-in-item-p)))
(setq column (if itemp
(org-get-indentation)
(org-list-item-body-column (point))))
(goto-char pos))
;; Drawers
((and (looking-at "[ \t]*:END:")
(save-excursion (re-search-backward org-drawer-regexp nil t)))
(save-excursion
(goto-char (1- (match-beginning 1)))
(setq column (current-column))))
;; Special blocks
((and (looking-at "[ \t]*#\\+end_\\([a-z]+\\)")
(save-excursion
(re-search-backward
(concat "^[ \t]*#\\+begin_" (downcase (match-string 1))) nil t)))
(setq column (org-get-indentation (match-string 0))))
((and (not (looking-at "[ \t]*#\\+begin_"))
(org-between-regexps-p "^[ \t]*#\\+begin_" "[ \t]*#\\+end_"))
(save-excursion
(re-search-backward "^[ \t]*#\\+begin_\\([a-z]+\\)" nil t))
(setq column
(cond ((equal (downcase (match-string 1)) "src")
;; src blocks: let `org-edit-src-exit' handle them
(org-get-indentation))
((equal (downcase (match-string 1)) "example")
(max (org-get-indentation)
(org-get-indentation (match-string 0))))
(t
(org-get-indentation (match-string 0))))))
;; This line has nothing special, look at the previous relevant
;; line to compute indentation
(t
(beginning-of-line 0)
(while (and (not (bobp))
(not (looking-at org-table-line-regexp))
(not (looking-at org-drawer-regexp))
;; When point started in an inline task, do not move
;; above task starting line.
(not (and inline-task-p (looking-at inline-re)))
;; Skip drawers, blocks, empty lines, verbatim,
;; comments, tables, footnotes definitions, lists,
;; inline tasks.
(or (and (looking-at "[ \t]*:END:")
(re-search-backward org-drawer-regexp nil t))
(and (looking-at "[ \t]*#\\+end_")
(re-search-backward "[ \t]*#\\+begin_"nil t))
(looking-at "[ \t]*[\n:#|]")
(looking-at org-footnote-definition-re)
(and (not inline-task-p)
(featurep 'org-inlinetask)
(org-inlinetask-in-task-p)
(or (org-inlinetask-goto-beginning) t))))
(beginning-of-line 0))
(cond
;; There was a list item above.
((ignore-errors (goto-char (org-in-item-p)))
(goto-char (org-list-get-top-point (org-list-struct)))
(setq column (org-get-indentation)))
;; There was an heading above.
((looking-at "\\*+[ \t]+")
(if (not org-adapt-indentation)
(setq column 0)
(goto-char (match-end 0))
(setq column (current-column))))
;; A drawer had started and is unfinished
((looking-at org-drawer-regexp)
(goto-char (1- (match-beginning 1)))
(setq column (current-column)))
;; Else, nothing noticeable found: get indentation and go on.
(t (setq column (org-get-indentation))))))
;; Now apply indentation and move cursor accordingly
(goto-char pos)
(if (<= (current-column) (current-indentation))
(org-indent-line-to column)
(save-excursion (org-indent-line-to column)))
;; Special polishing for properties, see `org-property-format'
(setq column (current-column))
(beginning-of-line 1)
(if (looking-at org-property-re)
(replace-match (concat (match-string 4)
(format org-property-format
(match-string 1) (match-string 3)))
t t))
(org-move-to-column column))))
(cond
(orgstruct-is-++
(let ((indent-line-function
(cadadr (assq 'indent-line-function org-fb-vars))))
(indent-according-to-mode)))
((org-at-heading-p) 'noindent)
(t
(let* ((element (save-excursion (beginning-of-line) (org-element-at-point)))
(type (org-element-type element)))
(cond ((and (memq type '(plain-list item))
(= (line-beginning-position)
(or (org-element-property :post-affiliated element)
(org-element-property :begin element))))
'noindent)
((and (eq type 'src-block)
(> (line-beginning-position)
(org-element-property :post-affiliated element))
(< (line-beginning-position)
(org-with-wide-buffer
(goto-char (org-element-property :end element))
(skip-chars-backward " \r\t\n")
(line-beginning-position))))
(if (not org-src-tab-acts-natively) 'noindent
(let ((org-src-strip-leading-and-trailing-blank-lines nil))
(org-babel-do-key-sequence-in-edit-buffer (kbd "TAB")))))
(t
(let ((column (org--get-expected-indentation element nil)))
;; Preserve current column.
(if (<= (current-column) (current-indentation))
(org-indent-line-to column)
(save-excursion (org-indent-line-to column))))
;; Align node property. Also preserve current column.
(when (eq type 'node-property)
(let ((column (current-column)))
(org--align-node-property)
(org-move-to-column column)))))))))
(defun org-indent-drawer ()
"Indent the drawer at point."

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@ -440,6 +440,163 @@
(buffer-string))))))
;;; Indentation
(ert-deftest test-org/indent-line ()
"Test `org-indent-line' specifications."
;; Do not indent footnote definitions or headlines.
(should
(zerop
(org-test-with-temp-text "* H"
(org-indent-line)
(org-get-indentation))))
(should
(zerop
(org-test-with-temp-text "[fn:1] fn"
(let ((org-adapt-indentation t)) (org-indent-line))
(org-get-indentation))))
;; Do not indent before first headline.
(should
(zerop
(org-test-with-temp-text ""
(org-indent-line)
(org-get-indentation))))
;; Indent according to headline level otherwise, unless
;; `org-adapt-indentation' is nil.
(should
(= 2
(org-test-with-temp-text "* H\nA"
(forward-line)
(let ((org-adapt-indentation t)) (org-indent-line))
(org-get-indentation))))
(should
(= 2
(org-test-with-temp-text "* H\n\nA"
(forward-line)
(let ((org-adapt-indentation t)) (org-indent-line))
(org-get-indentation))))
(should
(zerop
(org-test-with-temp-text "* H\nA"
(forward-line)
(let ((org-adapt-indentation nil)) (org-indent-line))
(org-get-indentation))))
;; Indenting preserves point position.
(should
(org-test-with-temp-text "* H\nAB"
(forward-line)
(forward-char)
(let ((org-adapt-indentation t)) (org-indent-line))
(looking-at "B")))
;; Do not change indentation at an item.
(should
(= 1
(org-test-with-temp-text "* H\n - A"
(forward-line)
(let ((org-adapt-indentation t)) (org-indent-line))
(org-get-indentation))))
;; On blank lines at the end of a list, indent like last element
;; within it if the line is still in the list. Otherwise, indent
;; like the whole list.
(should
(= 4
(org-test-with-temp-text "* H\n- A\n - AA\n"
(goto-char (point-max))
(let ((org-adapt-indentation t)) (org-indent-line))
(org-get-indentation))))
(should
(zerop
(org-test-with-temp-text "* H\n- A\n - AA\n\n\n\n"
(goto-char (point-max))
(let ((org-adapt-indentation t)) (org-indent-line))
(org-get-indentation))))
;; Likewise, on a blank line at the end of a footnote definition,
;; indent at column 0 if line belongs to the definition. Otherwise,
;; indent like the definition itself.
(should
(zerop
(org-test-with-temp-text "* H\n[fn:1] Definition\n"
(goto-char (point-max))
(let ((org-adapt-indentation t)) (org-indent-line))
(org-get-indentation))))
(should
(zerop
(org-test-with-temp-text "* H\n[fn:1] Definition\n\n\n\n"
(goto-char (point-max))
(let ((org-adapt-indentation t)) (org-indent-line))
(org-get-indentation))))
;; After the end of the contents of a greater element, indent like
;; the beginning of the element.
(should
(= 1
(org-test-with-temp-text " #+BEGIN_CENTER\n Contents\n#+END_CENTER"
(forward-line 2)
(org-indent-line)
(org-get-indentation))))
;; At the first line of an element, indent like previous element's
;; first line, ignoring footnotes definitions and inline tasks, or
;; according to parent.
(should
(= 2
(org-test-with-temp-text "A\n\n B\n\nC"
(goto-char (point-max))
(org-indent-line)
(org-get-indentation))))
(should
(= 1
(org-test-with-temp-text " A\n\n[fn:1] B\n\n\nC"
(goto-char (point-max))
(org-indent-line)
(org-get-indentation))))
(should
(= 1
(org-test-with-temp-text " #+BEGIN_CENTER\n Contents\n#+END_CENTER"
(forward-line 1)
(org-indent-line)
(org-get-indentation))))
;; Within code part of a source block, use language major mode if
;; `org-src-tab-acts-natively' is non-nil. Do nothing otherwise.
(should
(= 6
(org-test-with-temp-text "#+BEGIN_SRC emacs-lisp\n (and A\nB)\n#+END_SRC"
(forward-line 2)
(let ((org-src-tab-acts-natively t)
(org-edit-src-content-indentation 0))
(org-indent-line))
(org-get-indentation))))
(should
(zerop
(org-test-with-temp-text "#+BEGIN_SRC emacs-lisp\n (and A\nB)\n#+END_SRC"
(forward-line 2)
(let ((org-src-tab-acts-natively nil)
(org-edit-src-content-indentation 0))
(org-indent-line))
(org-get-indentation))))
;; Otherwise, indent like the first non-blank line above.
(should
(zerop
(org-test-with-temp-text "#+BEGIN_CENTER\nline1\n\n line2\n#+END_CENTER"
(forward-line 3)
(org-indent-line)
(org-get-indentation))))
;; Align node properties according to `org-property-format'. Handle
;; nicely empty values.
(should
(equal ":PROPERTIES:\n:key: value\n:END:"
(org-test-with-temp-text ":PROPERTIES:\n:key: value\n:END:"
(forward-line)
(let ((org-property-format "%-10s %s"))
(org-indent-line)
(buffer-string)))))
(should
(equal ":PROPERTIES:\n:key:\n:END:"
(org-test-with-temp-text ":PROPERTIES:\n:key:\n:END:"
(forward-line)
(let ((org-property-format "%-10s %s"))
(org-indent-line)
(buffer-string))))))
;;; Editing