Update show-paren--last-pos also in the "not at paren position" case.
Otherwise, we don't get the context info when moving point from a
paren position to a non-paren position and back again.
* lisp/paren.el (show-paren-context-when-offscreen): Add new
possibility `overlay'.
(show-paren--context-overlay): New defvar.
(show-paren--delete-context-overlay): New function.
(show-paren--show-context-in-overlay): New function.
(show-paren-function): Handle the new `overlay' case.
* lisp/emacs-lisp/eldoc.el (eldoc-display-message-no-interference-p):
There's no interference if `show-paren-context-when-offscreen' is
overlay or child-frame.
* etc/NEWS: Extend section about the new
`show-paren-context-when-offscreen' custom option.
* lisp/paren.el (show-paren-context-when-offscreen): Allow special
value `child-frame'.
(show-paren-function): Handle `child-frame' value of
`show-paren-context-when-offscreen'.
(show-paren--context-child-frame): New defvar.
(show-paren--context-child-frame-redirect-focus): New function.
(show-paren--context-child-frame-buffer): New function.
(show-paren--context-child-frame-parameters): New defvar.
(show-paren--delete-context-child-frame): New function.
(show-paren--show-context-in-child-frame): New function.
* lisp/simple.el (blink-paren-open-paren-line-string): Extract
functionality that shows the open paren line in the echo area into its
own function, to reuse it from paren.el.
(blink-matching-open): Use blink-paren-open-paren-line-string.
* lisp/paren.el (show-paren-context-when-offscreen): New option
show-paren-context-when-offscreen.
(show-paren-function): Implement it using
blink-paren-open-paren-line-string.
* lisp/emacs-lisp/eldoc.el (eldoc-display-message-no-interference-p):
Make sure the feature works well with eldoc.
* test/lisp/paren-tests.el (paren-tests-open-paren-line): Test
blink-paren-open-paren-line-string.
* doc/emacs/programs.texi (Matching): Update the documentation.
* etc/NEWS: And announce the new feature.
* lisp/paren.el (show-paren--delete-overlays):
New function, extracted from show-paren-mode.
(show-paren-local-mode): New minor mode.
(show-paren-mode): Update docstring to mention it (bug#29381).
* doc/emacs/programs.texi (Matching): Update show-paren-mode section.
* lisp/paren.el: Use lexical-binding.
(show-paren--default): Use imperative form in doc-string.
* test/lisp/paren-tests.el: New file with tests for paren.el.
Restore lines saying "Maintainer: emacs-devel@gnu.org" when there is
no special maintainer for a file. Although this wasn't documented
it was common practice and removing the lines didn't have consensus.
Add a paragraph to minor mode's docstring documenting the mode's ARG
usage if the supplied docstring doesn't already contain the word "ARG".
* easy-mmode.el (easy-mmode--arg-docstring): New const.
(easy-mmode--arg-docstring): New function.
(define-minor-mode): Use them.
Remove argument documentation from all minor modes.
Most of this change is to boilerplate commentary such as license URLs.
This change was prompted by ftp://ftp.gnu.org's going-away party,
planned for November. Change these FTP URLs to https://ftp.gnu.org
instead. Make similar changes for URLs to other organizations moving
away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and
fsf.org when this works, as this will further help defend against
man-in-the-middle attacks (for this part I omitted the MS-DOS and
MS-Windows sources and the test tarballs to keep the workload down).
HTTPS is not fully working to lists.gnu.org so I left those URLs alone
for now.
* lisp/faces.el (show-paren-match-expression): Define the new face.
* lisp/paren.el (show-paren-function): Apply the different face
when in expression mode. (Bug#28047)
Copyright-paperwork-exempt: yes
* lisp/paren.el (show-paren-highlight-openparen): Enhance doc string.
* doc/emacs/programs.texi (Matching): Add descriptions of some pertinent user
options, including the new show-paren-when-point-inside-paren and
show-paren-when-point-in-periphery.
* etc/NEWS (.. Specialized Modes ...): Add an entry for Show Paren mode.
Move an entry on pcase to the Lisp Changes section.
inside a paren.
paren.el (show-paren-style, show-paren-delay)
(show-paren-priority, show-paren-ring-bell-on-mismatch): Remove
superfluous :group specifications.
(show-paren-when-point-inside-paren)
(show-paren-when-point-in-periphery): New customizable variables.
(show-paren-highlight-openparen): Make into a defcustom.
(show-paren--unescaped-p, show-paren--categorize-paren)
(show-paren--locate-near-paren): New defuns.
(show-paren--default): Refaactor and trigger on more paren
positions.
(show-paren-function): Small consequential changes.
* lisp/faces.el (paren-showing-faces, show-paren-match)
(show-paren-mismatch): Move from paren.el.
* lisp/simple.el (blink-matching--overlay): New variable.
(blink-matching-open): Instead of moving point, highlight the
matching paren with an overlay
(http://lists.gnu.org/archive/html/emacs-devel/2013-12/msg00333.html).
(show-paren-mode): Always start the timer.
(show-paren--idle-timer): Rename from show-paren-idle-timer.
(show-paren--overlay, show-paren--overlay-1): Rename from
show-paren-overlay and show-paren-overlay-1, and initialize to an
overlay rather than to nil.
(show-paren-function): Misc cleanup and simplifications.
