* src/w32.c (sys_write): Don't write to a pipe more stuff than its
buffer can hold. Don't return -1 if something has been written to
the pipe. Zero out 'errno' before calling '_write', to avoid
returning a stale value. (Bug#22344)
* src/w32proc.c (syms_of_ntproc) <w32-pipe-buffer-size>: New variable.
* src/w32.c (pipe2): Use it to request a user-defined size for the
pipe being created.
* etc/NEWS: Mention 'w32-pipe-buffer-size'.
* doc/emacs/msdos.texi (Windows Processes): Document
'w32-pipe-buffer-size'.
* doc/misc/eshell.texi (Input/Output): Document the new
'#<bufname>' syntax.
(Input/Output): Document 'eshell-destroy-buffer-when-process-dies'.
Disable "Key Index" generation, as there are no @kindex entries in
this manual.
* doc/emacs/maintaining.texi (Maintaining): Add a list of
described features.
(Xref): New section, made out of thoroughly rewritten "Tags"
section.
(Find Identifiers, Looking Up Identifiers, Xref Commands)
(Identifier Search, List Identifiers): New subsections,
incorporating the old tags commands and the new xref commands.
(Tags Tables, Tag Syntax, Create Tags Table, Etags Regexps):
Section and subsections demoted to a lower level.
* doc/emacs/search.texi (Search):
* doc/emacs/windows.texi (Pop Up Window):
* doc/emacs/frames.texi (Creating Frames):
* doc/emacs/programs.texi (Imenu, Symbol Completion):
* doc/emacs/building.texi (Grep Searching):
* doc/emacs/dired.texi (Operating on Files):
* doc/emacs/glossary.texi (Glossary): All references to tags changed.
* CONTRIBUTE : Encourage use of ":tags '(:expensive-test)".
Explain make target `check-expensive'.
* etc/NEWS: Mention new make target `check-expensive'.
* test/automated/Makefile.in (check-doit): New target.
(check, check-expensive): Use it.
* doc/emacs/display.texi (Useless Whitespace): Document
'whitespace-toggle-options' and the new 'big-indent' style.
Document 'whitespace-big-indent-regexp'. Document the Global
Whitespace mode.
* doc/emacs/text.texi (TeX Print): Document
'tex-print-file-extension'.
* doc/emacs/programs.texi (Misc for Programs): Document support
for Prettify Symbols mode in TeX mode.
Use this in C, C++, and Objective C Modes. Fixes bug#22246
* src/syntax.c (comment-end-can-be-escaped): New buffer local variable.
(forw-comment, back-comment): On encountering an end of comment character,
test whether it is escaped when `comment-end-can-be-escaped' is non-nil.
* doc/lispref/syntax.texi (Control Parsing): Describe
`comment-end-can-be-escaped'.
* etc/NEWS (Lisp Changes): Describe `comment-end-can-be-escaped'.
* lisp/progmodes/cc-langs.el: New c-lang-setvar `comment-end-can-be-escaped'.
* lisp/net/imap.el (imap-ssl-program): Remove (bug#21134).
(imap-starttls-open): Use open-network-stream instead of starttls.el.
(imap-tls-open): Use open-network-stream instead of tls.el.
* lisp/url/url-http.el (url-user-agent): Move from here...
* lisp/url/url-vars.el (url-user-agent): ...to here. This is to
keep all the URL defcustoms in one place, and also have it defined
whenever the URL library is loaded.
* doc/misc/url.texi (Customization): Document 'url-user-agent'.
* lisp/progmodes/sh-script.el (sh-mode, sh-set-shell): Document
the 'sh-shell' file-local variable.
(top level): Add an auto-load form to avoid byte-compiler warning
about 'comint-send-string'.
* doc/emacs/rmail.texi (Rmail Summary Edit, Rmail Deletion):
Document new behavior of 'd' and 'C-d' with numeric argument.
(Rmail Display): Document the rendering of HTML MIME parts.
