These changes improve setting the language-environment and font
selection when MS-Windows returns useless "ZZZ" as the "language
name", which then disrupts all the setup of the locale-dependent
stuff, and in particular font selection.
* lisp/w32-fns.el (w32-charset-info-alist): Add an element for
"iso8859-5", in case LANG is set to something unusable, like
"ZZZ". This allows fonts capable of displaying Cyrillic
characters to be used even when language preferences are screwed.
* src/w32.c (init_environment): If GetLocaleInfo returns "ZZZ" as
the "language name" for LOCALE_USER_DEFAULT, try again with locale
ID based on what GetUserDefaultUILanguage returns. (Bug#39286)
* doc/lispref/syntax.texi (Syntax Properties): Correct the
information about flushing the state by copying the text from the
doc string (bug#46274).
(cherry picked from commit ff701ce2b2)
* doc/emacs/indent.texi (Indentation Commands): Clarify that the
other keys don't just exit the transient mode, but are also
handled as normally (bug#46296).
* lisp/progmodes/project.el (project-find-regexp):
Fix the previous change (project-root is not defined in this version).
(project-or-external-find-regexp): Same.
* lisp/progmodes/project.el (project-find-regexp):
Bind default-directory to the project root, to save this value
in the resulting buffer (esp. if the project selector was used,
(https://lists.gnu.org/archive/html/emacs-devel/2021-02/msg00140.html).
(project-or-external-find-regexp): Same.
(cherry picked from commit c07ebfcbe0)
* lisp/gnus/nnmaildir.el (nnmaildir-request-article): Enable
multipart 8bit-content-transfer-encoded files to be displayed
correctly by reading as `raw-text' instead of having Emacs
(incorrectly) decode the files (bug#44307).
Copyright-paperwork-exempt: yes
* doc/emacs/glossary.texi (Glossary): Add "Tag" to the Glossary.
* doc/emacs/maintaining.texi (Xref): Mention that identifiers are
also known as "tags".
* lisp/replace.el (read-regexp, read-regexp-suggestions): Improve
wording of doc strings. (Bug#46088) (Bug#46089)
(cherry picked from commit 49eb03d6c8)
* lisp/progmodes/xref.el (xref-revert-buffer):
Erase the buffer only after fetching the new contents (bug#46042).
(cherry picked from commit 5821dee094)
* doc/lispref/text.texi (Undo): Add a cross-reference to the
description of 'undo-amalgamate-change-group'.
(Atomic Changes): Expand and improve the description of
'undo-amalgamate-change-group'. (Bug#42303)
* lisp/mail/sendmail.el (mail-archive-file-name)
(mail-default-reply-to, mail-self-blind, mail-default-headers):
Say in the doc string that 'message-default-mail-headers' shall be
customized when using 'message-mode' for email composition.
(Bug#46029)
* lisp/window.el (window-sizable): Don't try to grow a mini window
when the root window's minimum height is already larger than its
actual height (Bug#45737).
* lisp/startup.el (startup--load-user-init-file): Test the value
of 'inhibit-default-init', not just the LOAD-DEFAULTS argument,
because loading the user's init file could have set the value of
the former.
(command-line): Call 'startup--load-user-init-file' with last arg
t: there's no longer any need to test the value of
'inhibit-default-init' here, as it will be tested by the called
function. (Bug#45708)
* lisp/gnus/nndoc.el (nndoc-possibly-change-buffer): If we're
reading an mbox file, it may contain messages that use
content-transfer-encoding 8bit, which means that we have to treat
the file as a sequence of byte (bug#42951). This avoids
double-decoding -- once by Emacs when inserting the mbox into the
buffer, and once by Gnus when displaying the articles.
* doc/misc/widget.texi (Basic Types): The user options
widget-glyph-directory and widget-glyph-enable were renamed long ago
to widget-image-directory and widget-image-enable, but the manual
kept calling them by their old names. Update the names.
