Attempt to M-x org-screenshot-take 'Symbol value as variable is void: return' problem
reported by Brett Viren

* contrib/lisp/org-screenshot.el (org-screenshot-take): Quote the last-input-event
in backquote expansion.
only wrap gnuplot data values in " when necessary

* lisp/ob-gnuplot.el (org-babel-gnuplot-quote-tsv-field): Only wrap
  gnuplot data values in " when necessary.
ox: Improve speed wrt table export

* lisp/ox.el (org-export-resolve-fuzzy-link): Change property name
  holding cache.
(org-export-table-has-header-p, org-export-table-row-group,
org-export-table-cell-width, org-export-table-cell-alignment): Cache
results.
(org-export-table-cell-address): Refactor.
(org-export-get-parent): Inline function.
* testing/lisp/test-ox.el: Update tests.
ox-ascii: Improve speed wrt table export

* lisp/ox-ascii.el (org-ascii--table-cell-width): Cache results of
  this internal function since it is called at each cell, though its
  value only change column wise.
Merge branch 'maint'
org.texi: Correct syntax for exporting HTML fragments
org.texi: Fix joke
Merge branch 'maint'
ox: Fix "Symbol's value as variable is void: org-export--default-title"

* lisp/ox.el (org-export--default-title): Fix "Symbol's value as
  variable is void: org-export--default-title".

Bug was introduced in b70e77343aa3daee9312c81c96ef5da217d7fda5.
Merge branch 'maint'