* src/buffer.c (disable_line_numbers_overlay_at_eob): New
function.
* src/lisp.h (disable_line_numbers_overlay_at_eob): Add prototype.
* src/xdisp.c (should_produce_line_number): When at ZV, call
disable_line_numbers_overlay_at_eob to determine whether line
numbers should be displayed beyond ZV.
* src/xdisp.c (maybe_produce_line_number): Fix the condition for
producing space glyphs instead of a line number to include the
case of display strings and overlays.
* src/xdisp.c (x_produce_glyphs, hscroll_window_tree): Adjust
hscroll calculations to line-number display.
* src/term.c (produce_glyphs): Adjust tab stop to window's
hscroll. These two changes fix horizontal scrolling when line
numbers are displayed. But there's still a bug: the horizontal
shift of lines that begin with a TAB is different from the rest.
* src/xdisp.c (move_it_in_display_line_to): Call
should_produce_line_number to determine whether a line number
should be produced for this screen line.
* etc/NEWS: Update the documentation.
* src/xdisp.c (syms_of_xdisp) <display-line-numbers-disable>: New
symbol.
(should_produce_line_number): New function.
(display_line): Use should_produce_line_number to determine
whether a line number should be produced for each glyph row.
* lisp/faces.el (line-number-current-line): New face.
* src/xdisp.c (syms_of_xdisp) <line-number-current-line>: New
symbol.
(try_window_id, try_cursor_movement): Disable these optimizations
when the line-number-current-line face is different from
line-number face.
(maybe_produce_line_number): Display the current line in the
line-number-current-line face, if it's different from line-number.
* src/xdisp.c (redisplay_window): If forced window-start requires
to move a window's point, and the window is under relative
line-number display, force another round of redisplay to update
the relative line numbers. This fixes follow-mode "redisplay" of
its window group.
* lisp/frame.el: Add display-line-numbers to the list of variables
that should trigger redisplay of the current buffer.
* src/xdisp.c (maybe_produce_line_number): Update the metrics in
IT, not in IT->glyph_row, since the latter gets overwritten in
display_line. Fixes display of line numbers when the font used
for them is larger than that of the default face.
* src/xdisp.c: (maybe_produce_line_number): Use the default face
for background of the blank glyphs in the line-number area which
are drawn beyond EOB.
(display_line): Reset the glyph row's displays_text_p flag only on
empty lines that don't display line numbers. This fixes cursor
display beyond EOB. Fix the bidi information in the glyphs
produced for line numbers. Set the avoid_cursor_p flag of glyphs
produced for line numbers.
* src/xdisp.c (row_text_area_empty): New function.
(display_line): Call row_text_area_empty to verify that a glyph
row's text area is devoid of any glyphs that came from a buffer or
a string. This fixes a bug with empty-lines indication
disappearing when line numbers or line-prefix are displayed.
(display_line): Delete the argument FORCE; all callers changed.
Remove the condition for actually producing the glyphs for the
line number, as even if the number didn't change we need to
produce empty space.
* src/xdisp.c (maybe_produce_line_number): Produce a blank before
the number, for R2L rows. Increment 'g' in the loop even if
glyph_row is NULL. Accept 2nd argument FORCE and produce the
line-number glyphs if it is non-zero.
(move_it_in_display_line_to): Account for the space taken by the
line-number glyphs. Call maybe_produce_line_number with 2nd
argument non-zero.
(set_cursor_from_row): Fix calculation of cursor X coordinate in
R2L rows with display-produced glyphs at the beginning.
(syms_of_xdisp) <line-number>: New face symbol.
<relative, display-line-width>: New symbols.
(maybe_produce_line_number): Use the line-number face for
displaying line numbers. Support relative line-number display.
Support user-defined width for displaying line numbers.
(try_cursor_movement, try_window_id): Disable these optimizations
when displaying relative line numbers.
* src/dispextern.h (struct it): New member 'pt_lnum'.
* lisp/faces.el (line-number): New face.
* lisp/cus-start.el (standard): Provide customization forms for
display-line-numbers and display-line-width.
* lisp/menu-bar.el (menu-bar-showhide-menu): Add menu-bar item to
turn display-line-numbers on and off.
* etc/NEWS: Document the new feature.
* src/xdisp.c (syms_of_xdisp) <display-line-numbers>: New
buffer-local variable.
Include <math.h>.
(maybe_produce_line_number): New function.
(DISP_INFINITY): Rename from INFINITY, since math.h defines INFINITY.
(try_window_reusing_current_matrix): Don't use this method when
display-line-numbers is in effect.
* src/dispextern.h (struct it): New members 'lnum'.
Also (unrelated change) initialize the modes' keymaps at each loading.
* lisp/progmodes/cc-cmds.el (c-update-modeline): amend for the new information
on the modeline.
(c-block-comment-flag): New variable.
(c-toggle-comment-style): New function.
* lisp/progmodes/cc-langs.el (c-block-comment-starter)
(c-line-comment-starter): Make them c-lang-defvars.
(c-block-comment-is-default): New c-lang-defvar.
(comment-start, comment-end): Make the default values dependent on
c-block-comment-is-default.
* lisp/progmodes/cc-mode.el (c-mode-base-map): Define C-c C-k in this map.
(c-basic-common-init): Initialize c-block-comment-flag.
(c-mode-map, c++-mode-map, objc-mode-map, java-mode-map, idl-mode-map)
(pike-mode-map, awk-mode-map): Make entries in these key maps each time the
mode is loaded rather than just once per Emacs session.
* doc/misc/cc-mode.texi (Comment Commands): Introduce the notion of comment
style.
(Minor Modes): Define comment style. Describe how comment style influences
the information displayed on the modeline. Document c-toggle-comment-style.
(FAQ): Add a question about toggling the comment style.
* configure.ac (WARN_CFLAGS): With Clang, use
-Wno-tautological-compare regardless of --enable-gcc-warnings.
(WERROR_CFLAGS): Simplify assignments, and guarantee it’s always set.
* lib/strftime.c: Copy from gnulib, reverting Clang-specific
change which I hope is no longer needed.
* src/emacs.c (main): Revert rlim_t change, as rlim_t is signed on
some older non-POSIX hosts.
* lib-src/make-docfile.c (put_filename): Undo recent change.
The Clang false alarm occurs only with CFLAGS=-save-temps and
we needn’t worry about pacifying unusual compiler configurations.
* src/emacs-module.h: Remove __STDC_VERSION__ check. In the past
we’ve found that some compilers do not define this symbol even
when they work well enough. If necessary features like stdbool.h
are missing the compiler will complain eventually anyway.
* src/image.c (x_create_x_image_and_pixmap) [HAVE_NTGUI]: Avoid
compilation warning under -Warray-bounds by temporarily disabling
the -Warray-bounds option.
* lisp/net/tramp-cache.el (tramp-cache-read-persistent-data):
New defvar.
(top): Use it.
* lisp/net/tramp.el (tramp-handle-file-name-case-insensitive-p):
Check for connected, not for connectable. (Bug#27315)
(tramp-process-actions):
* lisp/net/tramp-gvfs.el (tramp-gvfs-maybe-open-connection):
Use `tramp-cache-read-persistent-data'.
* test/lisp/net/tramp-tests.el (top): Set also
`tramp-cache-read-persistent-data'.
Using --module-assertions helps us find bugs in the test module. But
we can use it only if Emacs was compiled with module support.
* test/Makefile.in (MODULES_EMACSOPT): New variable.
(emacs): Use it.
* INSTALL (--with-modules): List cleanup attribute as prereq.
* src/conf_post.h (__has_attribute_cleanup): Remove; no longer needed.
* src/emacs-module.c (MODULE_SETJMP_1): Don’t attempt to verify
(__has_attribute (cleanup)), as Oracle Studio 12.5 supports
__has_attribute only inside preprocessor expressions. The C
compiler should check the cleanup attribute in the next line anyway.
(module_reset_handlerlist): Remove an unnecessary ‘const’
that causes Oracle Studio 12.5 to refuse to compile.
The test/data/emacs-module/Makefile only built a single target, and
inlining it into test/Makefile simplifies dependency tracking and
reduces code duplication.
* configure.ac: Don't build test/data/emacs-module/Makefile.
* Makefile.in ($(test_module)): Inline compilation.
(clean): Also clean test module outputs.
* lisp/emacs-lisp/cl-print.el: Autoload `disassemble-1'.
(cl-print-compiled-button): New variable.
(help-byte-code): New button type, calls `disassemble' in its action.
(cl-print-object): Use it if `cl-print-compiled-button' is
non-nil.
