1
Fork 0
mirror of git://git.sv.gnu.org/emacs.git synced 2026-02-07 16:10:46 -08:00
Commit graph

3876 commits

Author SHA1 Message Date
Jared Finder
66ac17289a Make libraries works with xterm-mouse-mode.
Change calls from 'read-event' to 'read-key' in libraries expecting
mouse events.  Do this only when 'xterm-mouse-mode' is enabled.  That
way those libraries read decoded mouse events instead of the
underlying escape sequence.  Add a parameter to 'read-key' that avoids
running any of the unbound fallbacks in 'read-key-sequence' so the
libraries can read mouse button-down events.

For backward compatibility purposes, the above logic is contained in a
new internal-only function: 'read--potential-mouse-event'.

* doc/lispref/commands.texi (Reading One Event): Document new
parameter to 'read-key'.  Mention that non-character events on
terminals need 'read-key'.
* lisp/subr.el (read-key-full-map): Add new keymap used by 'read-key'.
(read-key): Add new parameter 'fallbacks-disabled' to prevent running
any of the unbound fallbacks normally run by 'read-key-sequence'.
(read--potential-mouse-event): Add new function that calls 'read-key'
or 'read-event' depending on if 'xterm-mouse-mode' is set.
* lisp/foldout.el (foldout-mouse-swallow-events):
* lisp/isearch.el (isearch-pre-command-hook):
* lisp/mouse-drag.el (mouse-drag-throw, mouse-drag-drag):
* lisp/mouse.el (mouse-drag-secondary):
* lisp/ruler-mode.el (ruler-mode-mouse-grab-any-column)
(ruler-mode-mouse-drag-any-column-iteration):
* lisp/strokes.el (strokes-read-stroke, strokes-read-complex-stroke):
* lisp/textmodes/artist.el (artist-mouse-draw-continously)
(artist-mouse-draw-poly, artist-mouse-draw-2points):
* lisp/vc/ediff-wind.el (ediff-get-window-by-clicking):
* lisp/wid-edit.el (widget-button--check-and-call-button)
(widget-button-click): Call 'read--potential-mouse-event' instead of
'read-event'.
* lisp/wid-edit.el (widget-key-sequence-read-event): Call 'read-key'
with 'fallbacks-disabled' set instead of 'read-event'.  Unlike above
changes, this is unconditionally applied so it works for function
keys too.  Apply 'local-function-key-map' instead of
'function-key-map' as that contains the full terminal translations.
* lisp/vc/ediff.el (ediff-windows): Use 'display-mouse-p' to check if
a mouse is available.
* src/lread.c (Fread_event): Recommend 'read-key' in docstring for
'read-event' for non-character events.
2021-01-15 13:50:07 +02:00
Glenn Morris
84372a710b Merge from origin/emacs-27
149d64bbb2 * doc/misc/tramp.texi (Quick Start Guide): Fix thinko.
97747e6fb9 Tell people how to remove fontconfig customizations
33d0c603c6 ; * doc/lispref/modes.texi (SMIE Indentation Example): Fix...
03080b5545 Remove extraneous closing paren
2021-01-14 07:50:25 -08:00
Lars Ingebrigtsen
ca024b0575 Add a new variable `inhibit-interaction'
* doc/lispref/elisp.texi (Top): Add a link.
* doc/lispref/errors.texi (Standard Errors): Mention the new error.

* doc/lispref/minibuf.texi (Minibuffers): Add a link.
(Inhibiting Interaction): New node.

* src/data.c (syms_of_data): Define the `inhibited-interaction' error.

* src/lisp.h: Export the barfing function.

* src/lread.c (Fread_char, Fread_event, Fread_char_exclusive):
Barf if inhibited.

* src/minibuf.c (barf_if_interaction_inhibited): New function.
(Fread_from_minibuffer, Fread_no_blanks_input): Barf if inhibited.
(syms_of_minibuf): Define the `inhibit-interaction' variable.
2021-01-12 15:12:38 +01:00
Alan Mackenzie
c7c154bb57 Fix incompleteness in the implementation of minibuffer-follows-selected-frame
In particular, add a new value to the variable, and fix several bugs apparent
with the implementation up till now.

* doc/emacs/mini.texi (Basic Minibuffer): Add a description of the new
non-nil, non-t value of minibuffer-follows-selected-frame.

* doc/emacs/trouble.texi (Quitting): Add a description of how C-g handles
recursive minibuffers when typed in one which isn't the most nested.

* doc/lispref/minibuf.texi (Intro to Minibuffers): Add an @dfn for "active
minibuffer".
(Minibuffer Commands): Document that exit-minibuffer throws an error when not
invoked from the innermost Minibuffer.
(Recursive Mini): Amend the description of the visibility of outer level
minibuffers.
(Minibuffer Misc): In the description of the minibuffer hooks, replace "the
minibuffer" with "a minibuffer".

* etc/NEWS (Entry announcing minibuffer-follows-selected-frame): Add a
description of the new non-nil, non-t value.

* lisp/cus-start.el (top level): make the customize entry for
minibuffer-follows-selected-frame a choice between three entries.

* lisp/minibuffer.el (exit-minibuffer): throw an error when we're not in the
most nested minibuffer.
(top level): Bind C-g to abort-minibuffers in minibuffer-local-map.

* lisp/window.el (window-deletable-p): return the symbol `frame' when (amongst
other things) minibuffer-follows-selected-frame is t.

* src/eval.c (internal_catch): Add a mechanism to (throw 'exit t) repeatedly
when the throw currently being processed doesn't terminate the current
minibuffer.

* src/lisp.h (this_minibuffer_depth): New extern declaration
(minibuf_level): extern declaration moved here from window.h.

* src/minibuf.c (minibuffer_follows_frame, minibuf_stays_put)
(minibuf_moves_frame_when_opened): New and amended functions to query the
value of minibuffer-follows-selected-frame.
(choose_minibuf_frame): check (minibuf > 1) in place of (minibufer > 0) at a
particular place.  At another place, check that an alleged frame is so and is
live.  Before selecting a non-miniwindow on a different frame, ensure it
really is a different frame.
(move_minibuffer_onto_frame): Stack up all recursive minibuffers on the target
frame.  Check the minibuf_window isn't in the old frame before setting that
frame's miniwindow to an inactive minibuffer.
(Finnermost_minibuffer_p, Fabort_minibuffers): New primitives.
(this_minibuffer_depth): New function.
(read_minibuf): Record the calling frame in a variable, and switch back to it
after the recursive edit has terminated normally, using
select-frame-set-input-focus.  Stack up all the recursive minibuffers on the
miniwindow where a new minibuffer is being opened.  After the recursive edit,
switch the selected window away from the expired minibuffer's window.
(nth_minibuffer): New function.
(minibuffer-follows-selected-frame): Change from a DEFVAR_BOOL to a
DEFVAR_LISP.

* src/window.c (decode_next_window_args): Set *minibuf to w's mini-window's
content when that content is a minibuffer.

* src/window.h (minibuf_level) Declaration moved from here to lisp.h.
2021-01-10 20:32:40 +00:00
Pedro Andres Aranda Gutierrez
13bd909591 Add support for flat buttons
* src/xfaces.c (Finternal_set_lisp_face_attribute):
(realize_gui_face): Add support for `flat-button' (bug#45735).

Copyright-paperwork-exempt: yes
2021-01-10 14:10:18 +01:00
Lars Ingebrigtsen
40a0f8a3a2 Add a display-buffer window selection function that's more like XEmacs
* doc/lispref/windows.texi (Buffer Display Action Functions):
Document it.
* lisp/window.el (display-buffer--action-function-custom-type): Add.
(display-buffer): Mention it.
(display-buffer-use-least-recent-window): New function (bug#45688).

* src/window.c (Fwindow_bump_use_time): New function.
2021-01-07 16:35:48 +01:00
Simen Heggestøyl
33d0c603c6 ; * doc/lispref/modes.texi (SMIE Indentation Example): Fix previous commit 2021-01-05 12:22:31 +01:00
Mattias Engdegård
7f16f17727 Pretty-print keys without <> around modifiers (bug#45536)
Be consistent when pretty-printing keys: put modifiers outside <>,
thus the more logical C-M-<return> instead of <C-M-return>.

* src/keymap.c (Fsingle_key_description):
Skip modifier prefix before adding <>.
* doc/lispref/help.texi (Describing Characters): Update example.
* doc/lispref/debugging.texi (Backtraces):
* doc/lispref/minibuf.texi (Text from Minibuffer):
Use @kbd instead of @key.
* etc/NEWS: Announce the change.
* test/src/keymap-tests.el (keymap--key-description):
* test/lisp/subr-tests.el (subr--kbd): New tests.
2021-01-05 11:28:58 +01:00
Simen Heggestøyl
03080b5545 Remove extraneous closing paren
* doc/lispref/modes.texi (SMIE Indentation Example): Remove extraneous
closing paren.
2021-01-04 19:01:23 +02:00
Glenn Morris
49137d3278 Merge from origin/emacs-27
a7c2793efe Fix last change
2021-01-04 07:50:25 -08:00
Stefan Monnier
5282e1378e * doc/lispref/syntax.texi (Syntax Class Table): Clarify @ 2021-01-03 20:14:16 -05:00
Eli Zaretskii
a7c2793efe Fix last change
* doc/lispref/strings.texi (Creating Strings): Improve wording of
last change.  (Bug#45516)
2021-01-02 10:27:28 +02:00
Lars Ingebrigtsen
ec1e1f80e6 Add a reference between the Strings node and Search/Replace
* doc/lispref/strings.texi (Creating Strings): Mention
string-replace/replace-regexp-in-string (bug#45516).

(cherry picked from commit b9359d4183)
2021-01-02 10:21:55 +02:00
Paul Eggert
50f3949119 Merge from origin/emacs-27
33d159c36f Fix copyright years by hand
2021-01-01 01:28:16 -08:00
Paul Eggert
8bc552ffa5 Merge from origin/emacs-27
74a77ef299 Improve documentation of 'network-lookup-address-info'
c6d5555646 Display messages sent using ERC's /say
c156723769 Fix Rmail summary display when From: header is malformed
2021-01-01 01:14:58 -08:00
Paul Eggert
ba05d005e5 Update copyright year to 2021
Run "TZ=UTC0 admin/update-copyright".
2021-01-01 01:13:56 -08:00
Paul Eggert
33d159c36f Fix copyright years by hand
These are dates that admin/update-copyright did not update.
2021-01-01 00:33:28 -08:00
Paul Eggert
8c1fe1e5ef Update copyright year to 2021
Run "TZ=UTC0 admin/update-copyright $(git ls-files)".
2021-01-01 00:32:32 -08:00
Lars Ingebrigtsen
d22e74795d Revert recent add-to-ordered-list changes
* doc/lispref/lists.texi (List Variables): Revert.

* lisp/subr.el (add-to-ordered-list): Revert recent changes
because the semantics are too muddled.
2021-01-01 05:48:02 +01:00
Eli Zaretskii
74a77ef299 Improve documentation of 'network-lookup-address-info'
* src/process.c (Fnetwork_lookup_address_info):
* doc/lispref/processes.texi (Misc Network): Document the error
message emitted by 'network-lookup-address-info' when it fails.
2020-12-31 22:27:30 +02:00
Lars Ingebrigtsen
b1ac23ebef Allow add-to-ordered-list to use a test predicate
* doc/lispref/lists.texi (List Variables): Update manual.

* lisp/subr.el (add-to-ordered-list): Allow using a test
predicate, and make slightly more efficient (bug#45539).
2020-12-31 05:28:47 +01:00
Lars Ingebrigtsen
3c0c47b3a7 Revert "Switch add-to-ordered-list to eql"
This reverts commit b4fd857ead.

I misunderstood the purposed of the function.
2020-12-30 08:08:07 +01:00
Lars Ingebrigtsen
b4fd857ead Switch add-to-ordered-list to eql
* doc/lispref/lists.texi (List Variables): Update documentation.

* lisp/subr.el (add-to-ordered-list): Switch to eql (bug#45539).
2020-12-30 04:48:13 +01:00
Lars Ingebrigtsen
cfb0f1c07c Add caveat about the long' mode-line-compact' setting
* doc/lispref/modes.texi (Mode Line Basics): Elaborate on the
`long' setting.
2020-12-30 03:31:01 +01:00
Lars Ingebrigtsen
a66f0d3bd3 Introduce new variable mode-line-compact
* doc/lispref/modes.texi (Mode Line Basics): Document it (bug#34476).

* src/xdisp.c (display_mode_line): Use it.
(syms_of_xdisp): New variable mode-line-compact.
2020-12-29 04:53:03 +01:00
Lars Ingebrigtsen
40d1633259 Add a SPLIT parameter to `format-spec'
* doc/lispref/strings.texi (Custom Format Strings): Document it.

* lisp/format-spec.el (format-spec): Add an optional parameter to
return a list of strings (bug#33740).
2020-12-29 03:04:51 +01:00
Lars Ingebrigtsen
b9359d4183 Add a reference between the Strings node and Search/Replace
* doc/lispref/strings.texi (Creating Strings): Mention
string-replace/replace-regexp-in-string (bug#45516).
2020-12-29 02:19:03 +01:00
Lars Ingebrigtsen
b825131041 Document the text property limitations in mode lines
* doc/lispref/modes.texi (Properties in Mode, Mode Line Basics):
Mention the special text property limitations.
2020-12-28 02:18:16 +01:00
Lars Ingebrigtsen
0f790464d5 Add new predicates for sequence lengths
* doc/lispref/sequences.texi (Sequence Functions): Document them.
* lisp/emacs-lisp/byte-opt.el (side-effect-free-fns): Mark them as
side-effect-free.

* lisp/emacs-lisp/shortdoc.el (list): Mention them.

* src/fns.c (Flength): Mention them in the doc string.
(length_internal): New function.
(Flength_less, Flength_greater, Flength_equal): New defuns.
(syms_of_fns): Sym them.
2020-12-27 09:00:23 +01:00
Zajcev Evgeny
b3c9af9061 Improvements for `:base-uri' svg image property
* src/image.c (svg_load): Use ENCODE_FILE for `:base-uri'

* doc/lispref/display.texi (SVG Images): Add more documentation for
  `:base-uri'
2020-12-26 11:18:49 +02:00
Lars Ingebrigtsen
af359de917 Allow `string-limit' to work on encoded strings
* doc/lispref/strings.texi (Creating Strings): Document it.

* lisp/emacs-lisp/subr-x.el (string-limit): Allow limiting on
encoded strings.
2020-12-25 05:58:09 +01:00
Lars Ingebrigtsen
269cec13a2 Remove `string-slice' -- it's not very well defined
* doc/lispref/strings.texi (Creating Strings): Ditto.

* lisp/emacs-lisp/subr-x.el (string-slice): Remove.
2020-12-25 05:16:46 +01:00
Alan Mackenzie
9920929e7b Re-order the items in `profiler-report' output.
Putting the usage figures first on the line will eliminate the truncation of
function names.

lisp/profiler.el (profiler-version): Change to "28.1".
(profiler-format): Enhance, so that a width of zero means print the string
without padding or truncation.
(profiler-report-cpu-line-format, profiler-report-memory-line-format): Amend
for the new layout.  The number of places for the cpu samples has been reduced
from 19 to 12 (enough for ~30 years at 1,000 samples per second).
(profiler-report-line-format, profiler-report-describe-entry): Amend for the
new order of arguments to profiler-format.

etc/NEWS (Specialized Modes): Add an entry documenting this change.

doc/lispref/debugging.texi (Profiling): Describe the new ordering of the items
in place of the old ordering.
2020-12-22 12:06:21 +00:00
Lars Ingebrigtsen
051d8f7535 Make string-pad take an optional START parameter
* lisp/emacs-lisp/subr-x.el (string-pad): Alter the calling
convention.
2020-12-22 06:59:25 +01:00
Lars Ingebrigtsen
9480169f1b Change the string-limit parameter semantics
* lisp/emacs-lisp/subr-x.el (string-limit): Alter the calling
convention.
2020-12-22 06:54:32 +01:00
Lars Ingebrigtsen
f329a3180e Add string-chop-newline
* doc/lispref/strings.texi (Creating Strings): Document it.
* lisp/emacs-lisp/subr-x.el (string-chop-newline): Add new function.
2020-12-21 22:05:37 +01:00
Lars Ingebrigtsen
cf2e832185 Rename slice-string to string-slice
* lisp/emacs-lisp/subr-x.el (string-slice): Rename from slice-string.
* doc/lispref/strings.texi (Creating Strings): Ditto.
2020-12-21 20:18:57 +01:00
Lars Ingebrigtsen
b3dec31766 Add `string-pad'
* doc/lispref/strings.texi (Creating Strings): Document it.
* lisp/emacs-lisp/shortdoc.el (string): Add example.

* lisp/emacs-lisp/subr-x.el (string-pad): New function.
2020-12-21 20:01:28 +01:00
Lars Ingebrigtsen
87e422f104 Beef up the Emacs string utility set a bit
* doc/lispref/strings.texi (Modifying Strings): Document them.
* lisp/emacs-lisp/shortdoc.el (string): Add examples.

* lisp/emacs-lisp/subr-x.el (string-clean-whitespace)
(string-fill, string-limit, string-lines, slice-string): New
functions.
2020-12-21 18:53:40 +01:00
Basil L. Contovounesios
1a0a11f7d2 Inhibit buffer hooks in temporary buffers
Give get-buffer-create an optional argument to inhibit buffer hooks
in internal or temporary buffers for efficiency (bug#34765).

* etc/NEWS: Announce new parameter of get-buffer-create and
generate-new-buffer, and that with-temp-buffer and with-temp-file
now inhibit buffer hooks.

* doc/lispref/buffers.texi (Buffer Names): Fix typo.
(Creating Buffers): Document new parameter of get-buffer-create and
generate-new-buffer.
(Buffer List, Killing Buffers): Document when buffer hooks are
inhibited.
(Current Buffer):
* doc/lispref/files.texi (Writing to Files): Document that
with-temp-buffer and with-temp-file inhibit buffer hooks.
* doc/lispref/internals.texi (Buffer Internals): Document
inhibit_buffer_hooks flag.  Remove stale comment.
* doc/misc/gnus-faq.texi (FAQ 5-8):
* lisp/simple.el (shell-command-on-region): Fix indentation.

* lisp/files.el (kill-buffer-hook): Document when hook is inhibited.
(create-file-buffer):
* lisp/gnus/gnus-uu.el (gnus-uu-unshar-article):
* lisp/international/mule.el (load-with-code-conversion):
* lisp/mh-e/mh-xface.el (mh-x-image-url-fetch-image):
* lisp/net/imap.el (imap-open):
* lisp/net/mailcap.el (mailcap-maybe-eval):
* lisp/progmodes/flymake-proc.el
(flymake-proc--read-file-to-temp-buffer)
(flymake-proc--copy-buffer-to-temp-buffer): Simplify.

* lisp/subr.el (generate-new-buffer): Forward new optional argument
to inhibit buffer hooks to get-buffer-create.
(with-temp-file, with-temp-buffer, with-output-to-string):
* lisp/json.el (json-encode-string): Inhibit buffer hooks in buffer
used.

* src/buffer.c (run_buffer_list_update_hook): New helper function.
(Fget_buffer_create): Use it.  Add optional argument to set
inhibit_buffer_hooks flag instead of comparing the buffer name to
Vcode_conversion_workbuf_name.  All callers changed.
(Fmake_indirect_buffer, Frename_buffer, Fbury_buffer_internal)
(record_buffer): Use run_buffer_list_update_hook.
(Fkill_buffer): Document when buffer hooks are inhibited.  Use
run_buffer_list_update_hook.
(init_buffer_once): Inhibit buffer hooks in Vprin1_to_string_buffer.
(Vkill_buffer_query_functions, Vbuffer_list_update_hook): Document
when hooks are inhibited.
* src/buffer.h (struct buffer): Update inhibit_buffer_hooks
commentary.
* src/coding.h (Vcode_conversion_workbuf_name):
* src/coding.c (Vcode_conversion_workbuf_name): Make static again
since it is no longer needed in src/buffer.c.
(code_conversion_restore, code_conversion_save, syms_of_coding):
Prefer boolean over integer constants.
* src/fileio.c (Finsert_file_contents): Inhibit buffer hooks in
" *code-converting-work*" buffer.
* src/window.c (Fselect_window): Fix grammar.  Mention
window-selection-change-functions alongside buffer-list-update-hook.

* test/src/buffer-tests.el: Fix requires.
(buffer-tests-inhibit-buffer-hooks): New test.
2020-12-20 17:32:24 +00:00
Basil L. Contovounesios
f36971b59b ; Fix grammar in recent change to internals.texi 2020-12-18 23:23:07 +00:00
Michael Albinus
ddff5d3d87 Some minor Tramp changes
* doc/lispref/os.texi (Timers): Speak about `remote-file-error'.

* doc/misc/tramp.texi (Frequently Asked Questions): Speak about
`remote-file-error'.
(External packages): New subsection "Timers".

* lisp/net/tramp-adb.el (tramp-adb-handle-make-process):
* lisp/net/tramp-sh.el (tramp-sh-handle-make-process): Adapt error
function.  Handle coding.

* lisp/net/tramp.el (tramp-handle-make-process): Adapt error function.
2020-12-17 18:52:23 +01:00
Juri Linkov
67fb182cfa Give affixation-function higher priority over annotation-function (bug#45234)
* doc/lispref/minibuf.texi (Completion Variables)
(Programmed Completion): Describe precedence rules
of affixation-function and annotation-function.

* lisp/minibuffer.el (completion-metadata)
(completion-extra-properties): Describe precedence rules
of affixation-function and annotation-function.
(minibuffer-completion-help): First try to apply
affixation-function, if there is no such function,
try annotation-function.
2020-12-16 23:19:46 +02:00
Glenn Morris
fd4297b25a * doc/lispref/errors.texi (Standard Errors): Fix xref.
Though I am not sure "report a bug" is helpful.
2020-12-14 13:51:22 -08:00
Glenn Morris
7e30cb2c1c Tiny fix for lispref/variables.texi
* doc/lispref/variables.texi (Converting to Lexical Binding):
@strong{Note...} produces a spurious cross-reference in Info;
reword to avoid that.
2020-12-14 13:45:29 -08:00
Michael Albinus
c0c6cd2d5d Add 'remote-file-error' for Tramp
* doc/lispref/errors.texi (Standard Errors): Add 'remote-file-error'.

* etc/NEWS: Mention 'remote-file-error'.

* lisp/net/ange-ftp.el (ftp-error): Add error condition
`remote-file-error'.

* lisp/net/tramp-cmds.el (tramp-cleanup-all-connections): Do not set
`tramp-locked'.

* lisp/net/tramp-compat.el (remote-file-error): Define if it
doesn't exist.

* lisp/net/tramp-sh.el (tramp-timeout-session): Check for "locked"
property.
(tramp-maybe-open-connection): Simplify.

* lisp/net/tramp.el (tramp-locked, tramp-locker): Remove them.
(tramp-file-name-handler): Do not set them.
(with-tramp-locked-connection): New defmacro.
(tramp-accept-process-output, tramp-send-string): Use it.

* src/fileio.c (Qremote_file_error): New error symbol.

* test/lisp/net/tramp-tests.el (tramp-test43-asynchronous-requests):
Adapt test.  Remove :unstable tag.
2020-12-14 19:30:01 +01:00
Lars Ingebrigtsen
10bc4eac5b Tool bar documentation clarification: Mention forcing updates
* doc/lispref/keymaps.texi (Tool Bar): Document that flipping the
status of a tool bar item doesn't necessarily update the visuals
(bug#42957).
2020-12-14 17:07:41 +01:00
Lars Ingebrigtsen
252366866b Add a new recursively bound `current-minibuffer-command' variable
* doc/lispref/commands.texi (Command Loop Info): Document it
(bug#45177).

* src/callint.c (Fcall_interactively): Bind it.

* src/keyboard.c (syms_of_keyboard): Define
current-minibuffer-command.
2020-12-14 16:44:00 +01:00
Lars Ingebrigtsen
1c115e404e Clarify Extended Menu Items a bit more
* doc/lispref/keymaps.texi (Extended Menu Items): Expand a bit
more on how submenus are formed (bug#26428).
2020-12-13 13:49:25 +01:00
Philipp Stephani
52e3ac6303 Document and enforce some properties for strings created by modules.
When creating multibyte or unibyte strings, we should guarantee the
following invariants:

- When creating empty strings, a NULL data pointer should be allowed.
  This often arises in practice if the string length isn't known in
  advance, and we don't want to unnecessarily trigger undefined
  behavior.  Since functions like memcpy might not accept NULL
  pointers, use the canonical empty string objects in this case.

- Nonzero strings should be guaranteed to be unique and mutable.
  These are the same guarantees expected from Lisp functions such as
  'make-string' or 'unibyte-string'.  On the other hand, empty strings
  might not be unique.

* src/emacs-module.c (module_make_string)
(module_make_unibyte_string): Correctly handle empty strings.

* test/src/emacs-module-resources/mod-test.c (Fmod_test_make_string):
New test function.
(emacs_module_init): Expose it.

* test/src/emacs-module-tests.el (mod-test-make-string/empty)
(mod-test-make-string/nonempty): New unit tests.

* doc/lispref/internals.texi (Module Values): Document properties and
corner cases for strings.
2020-12-12 23:28:22 +01:00