lisp/org.el (org-ctrl-c-ctrl-c): Set tags for headlines whose text is a link

* lisp/org.el (org-ctrl-c-ctrl-c): 'C-c C-c' on a link is usually a
  no-op. If that link is in a headline, act as if the 'C-c C-c' was
  called on the headline, not the link.
Set opening via headline

* ox-koma-letter.el (org-koma-letter-headline-is-opening-maybe): new
variable.  If `t' let headlines set subject.
(org-koma-letter-headline): let headline set opening.
(org-koma-letter-template): let opening and closing be empty if nil.

Signed-off-by: Alan Schmitt <alan.schmitt@polytechnique.org>
Make ox-koma-letter pass checkdoc.

* ox-koma-letter.el: Reworded parts of the head of the file.
(org-koma-letter-prefer-special-headings,
org-koma-letter-subject-format, org-koma-letter-default-class,
org-koma-letter-special-tags-in-letter,
org-koma-letter-special-tags-after-closing,
org-koma-letter-special-tags-after-letter,
org-koma-letter-plug-into-ox, org-koma-letter-email,
org-koma-letter--get-tagged-contents,
org-koma-letter-special-contents): Changed docstring to pass checkdoc.
(org-koma-letter--get-value): Renamed `org-koma-letter--get-custom'.
Docstring changed to pass checkdoc.
(org-koma-letter--special-contents-as-macro): Renamed
`org-koma-letter--prepare-special-contents-as-macro'.  Docstring
changed to pass checkdoc.
(org-koma-letter--normalize-string): Renamed
org-koma-letter--remove-offending-new-lines.  Docstring changed to
pass checkdoc.
(org-koma-letter--determine-to-and-from): Renamed
org-koma-letter--determine-special-value.  Docstring changed to pass
checkdoc.

Some functions have been renamed to make the names slightly more
informative.

Signed-off-by: Alan Schmitt <alan.schmitt@polytechnique.org>
ox: Fix docstrings

* lisp/ox.el (org-export-to-buffer, org-export-to-file): Fix
  docstrings.
ox-publish: Remove unused dynamically scoped variable

* lisp/ox-publish.el (project-plist): Remove variable.
ox: Fix stack overflow in equal error

* lisp/ox.el (org-export-table-cell-width): Modify key (now an
  element) and value structure (now a vector) of cache so it can use
  `eq' as test. Elements are circular lists so `equal' cannot apply on
  them.

Reported-by: Jambunathan K <kjambunathan@gmail.com>
Merge branch 'maint'
ox: Fix stack overflow in equal error (part 2)

* lisp/ox.el (org-export-table-cell-alignment): Apply the same changes
  as in 2baa2c3afa70f86a6266b4bb9d5f763c5fb18388.
Merge branch 'maint'
ox: Fix 8c833ed9fbabae298054dd9eec574984acf3ab8b

* lisp/ox.el (org-export-table-cell-alignment): Use correct :test.
  See 2baa2c3afa70f86a6266b4bb9d5f763c5fb18388.
ox: Fix void `org-table-number-fraction'

* lisp/ox.el (org-export-table-cell-alignment): Ensure required
  variables are available.

This error is triggered in ODT export with lists using :list-table
feature.  This creates tables as parsed data on the fly in the tree,
triggering call to `org-export-table-cell-alignment', but `org-table'
library may not be available.
Merge branch 'maint'
org-element: Fix parsing error in `org-element-context'

* lisp/org-element.el (org-element-text-markup-successor,
  org-element-latex-or-entity-successor,
  org-element-export-snippet-successor,
  org-element-footnote-reference-successor,
  org-element-inline-babel-call-successor,
  org-element-inline-src-block-successor,
  org-element-line-break-successor, org-element-link-successor,
  org-element-plain-link-successor, org-element-macro-successor,
  org-element-radio-target-successor,
  org-element-statistics-cookie-successor,
  org-element-sub/superscript-successor,
  org-element-table-cell-successor, org-element-target-successor,
  org-element-timestamp-successor): Remove LIMIT argument.
(org-element--parse-objects, org-element--get-next-object-candidates):
Apply signature change to successors.
(org-element-context): Narrow buffer around object containers so
parsing of objects when using this function is done under the same
restrictions as in buffer parsing.
* testing/lisp/test-org-element.el: Add test.
Merge branch 'maint'
org-element: Modify misleading comment

* lisp/org-element.el (org-element-context): Modify misleading
  comment.
Merge branch 'maint'
Merge branch 'master' of orgmode.org:org-mode
Fix some issue with orgtbl-mode

* lisp/org-table.el (orgtbl-send-replace-tbl): Allow multiple spaces between
keywords in RECEIVE ORGTBL lines.
* doc/org.texi (A @LaTeX{} example): Fix typo in variable name.
Center currently clocked headline close to top of screen

* lisp/org-clock.el (org-clock-goto): Recenter to thrd line

Patch modified from proposal by Sebastien Vauban.
Speed up agenda by allowing to turn of some drawer properties

* lisp/org.el (org-agenda-ignore-drawer-properties): New option
(org-agenda-prepare-buffers): Honour
`org-agenda-ignore-drawer-properties'.

Following a proposal by Daniel Clemente