* src/editfns.c (Fformat): More accurate description of %g and
effects of the various flags on it. More accurate description of
integer conversions.
* doc/lispref/strings.texi (Formatting Strings): More accurate
description of %g and effects of the various flags on it. More
accurate description of integer conversions. (Bug#25557)
The ambiguity was whether INITVALUE is evaluated when it's not going to be
used to set SYMBOL's value.
* src/eval.c (defvar): Rewrite a paragraph of the doc string.
(cherry picked from commit 8295e97f18)
* doc/emacs/msdos.texi (Windows Keyboard): Document how to set up
w32-scroll-lock-modifier so that Scroll Lock toggles the LED.
* src/w32fns.c (syms_of_w32fns) <w32-scroll-lock-modifier>: Doc
fix. (Bug#25204)
Backport from master. Sun C 5.14 supports C11 but not GCC
extensions, and so refuses to compile Emacs without this patch.
* src/alloc.c (lmalloc, lrealloc): Don't use INT_ADD_WRAPV on
size_t, as in general this macro is restricted to signed types.
* src/w32.c (w32_init_file_name_codepage): New function, resets
file_name_codepage and w32_ansi_code_page to undo the values
recorded during dumping.
(codepage_for_filenames): Fix an embarrassing typo. Ignore the
cached value of file-name encoding if it is nil, i.e. not
initialized yet. Actually cache the last used file-name encoding
to avoid calling APIs when not necessary.
* src/w32.h (w32_init_file_name_codepage): Add prototype.
* src/w32term.c (syms_of_w32term): Set the value of
w32_unicode_filenames according to the OS version. This avoids
resetting it during startup, which then causes temacs to run with
the incorrect value.
* src/emacs.c (main): Call w32_init_file_name_codepage early
during the startup.
* src/fileio.c (Fexpand_file_name) [WINDOWSNT]: Update 'newdir'
after converting $HOME to a UTF-8 string, so that 'newdirlim' is
consistent with it. (Bug#25038)
* lisp/international/mule-cmds.el (set-locale-environment): Set
'default-file-name-coding-system' to the ANSI codepage even in
non-interactive sessions.
* lisp/files.el (directory-abbrev-alist, abbreviated-home-dir):
Doc fix.
(abbreviate-file-name): Decode 'abbreviated-home-dir' if it is a
unibyte string.
* doc/lispref/files.texi (Directory Names): Index
'directory-abbrev-alist'.
* doc/lispref/os.texi (Time Calculations): Mention the meaning of
'nil' or a scalar number as the time-value argument. Add a
cross-reference to 'float-time' for computing a time difference as
a scalar number of seconds.
* src/editfns.c (Fformat_time_string, Ftime_less_p)
(Ftime_subtract, Ftime_add, Fdecode_time, Fcurrent_time_string)
(Fcurrent_time_zone): Mention in the doc strings the meaning of
nil argument and the fact that a time value can be a scalar number
of seconds since the epoch.
(Ftime_subtract): Mention 'float-time'.
Apple changed the spelling of its operating system again, to "macOS",
effective with macOS 10.12 Sierra (2016-09-20). Change Emacs
documentation and comments to match this. Stick with older OS
spellings ("OS X", "Mac OS X") when talking about older releases where
the older names are more correct.
Emacs C code assumes C99 features, but has long used traditional
comments /* like this */ instead of C99-style comments // like this.
Stick with traditional comments for now, partly for style, partly as
it may be safer with compilers that are not fully in C99 mode.
* src/search.c (looking_at_1, fast_looking_at, search_buffer): Prevent
relocation of buffer contents during calls to re_search_2. This ensures
the pointers into buffer text won't be invalidated by
r_alloc_sbrk (called from malloc with configurations where
REL_ALLOC=yes).
The fix was not complete, and completing it was proving too complicated.
- Revert "* src/regex.c (re_search_2): Make new code safe for
-Wjump-misses-init."
This reverts commit c2a17924a5.
- Revert "Port to GCC 6.2.1 + --enable-gcc-warnings"
This reverts commit f6134bbda2.
- Revert "Fix handling of allocation in regex matching"
This reverts commit ad66b3fadb.
- Revert "Fix handling of buffer relocation in regex.c functions"
This reverts commit ee04aedc72.
* src/search.c (Freplace_match): Move the call to BYTE_POS_ADDR
after the call to xpalloc, to avoid the danger of buffer text
relocation after its address was taken. (Bug#24358)
Bleeding-edge glibc sets emacs_cv_var_doug_lea_malloc to 'no'.
Do not merge to master.
* configure.ac: Check for valloc decl when compiling gmalloc.c.
* src/gmalloc.c (emacs_abort) [emacs]: Adjust decl to match
what is in lisp.h. Remove duplicate decl.
(aligned_alloc): #undef before defining.
(aligned_alloc, memalign) [!MSDOS]: Declare.
(valloc) [HAVE_DECL_VALLOC]: Remove duplicate decl.
* src/regex.c (ENSURE_FAIL_STACK, re_search_2):
Redo recent regex changes to avoid complaints from GCC 6.2.1 when
Emacs is configured with --enable-gcc-warnings. Also, work around
GCC bug 78081, which was uncovered by this new code.
`re_match_2_internal' uses pointers to the lisp objects that it
searches. Since it may call malloc when growing the "fail stack", these
pointers may be invalidated while searching, resulting in memory
curruption (Bug #24358).
To fix this, we check the pointer that the lisp object (as specified by
re_match_object) points to before and after growing the stack, and
update existing pointers accordingly.
* src/regex.c (STR_BASE_PTR): New macro.
(ENSURE_FAIL_STACK, re_search_2): Use it to convert pointers into
offsets before possible malloc call, and back into pointers again
afterwards.
(POS_AS_IN_BUFFER): Add explanatory comment about punning trick.
* src/search.c (search_buffer): Instead of storing search location as
pointers, store them as pointers and recompute the corresponding address
for each call to `re_search_2'.
(string_match_1, fast_string_match_internal, fast_looking_at):
* src/dired.c (directory_files_internal): Set `re_match_object' to Qnil
after calling `re_search' or `re_match_2'.
* src/regex.h (re_match_object): Mention new usage in commentary.
* src/editfns.c (format_time_string, Fcurrent_time_zone): Pass a
pointer to time_t value to emacs_localtime_rz and gmtime_r,
instead of relying on struct timespec's tv_sec member to be of
compatible type.
* src/lread.c (read1): Use Fcons for 'placeholder', not AUTO_CONS,
because elements of the list in 'read_objects' cannot be allocated
off the stack. (Bug#24640)
Backport from master.
* src/conf_post.h (GNUC_PREREQ): New macro.
* src/keyboard.c: Use it to work around GCC bug 54561.
* src/process.c (would_block): New function.
(server_accept_connection, wait_reading_process_output, send_process):
Use it.
* src/filelock.c (current_lock_owner): When reading the contents
of a lock, treat the UTF-8 for U+F022 as if it were ':' (Bug#24656).
Backport from master.
* etc/emacs-buffer.gdb <$qnil>: New variable.
(ybuffer-list, yset-buffer): Use $qnil for comparing against
'nil', as direct comparison with Qnil doesn't work in a build with
'--enable-check-lisp-object-type'.
* src/.gdbinit: Adapt commands of the temporary breakpoint in
init_sys_modes to a build with '--enable-check-lisp-object-type'.
* src/font.c (syms_of_font) <inhibit-compacting-font-caches>: New
boolean variable.
* src/alloc.c (compact_font_caches): Use it to bypass the call to
compact_font_cache_entry. (Bug#24634) (Bug#24565)
* etc/NEWS: Mention the new variable.
* src/fontset.c (syms_of_fontset) <use-default-font-for-symbols>:
New boolean variable.
(face_for_char): Use it to fall back to pre-Emacs 25.1 behavior
when selecting fonts for displaying symbol and punctuation
characters. (Bug#24644)
* etc/NEWS: Mention the new variable.
