chemacs.git/src/coding.c, branch devmain

Prefer ptrdiff_t to size_t when either will do

2026-05-24T02:18:53Z

Signed types are a bit safer, as they avoid some comparison confusion and -fsanitize=undefined can check more misuses of them. * src/alloc.c (lisp_malloc, lisp_align_malloc) (allocate_string_data, allocate_vector_from_block, object_bytes): * src/coding.c (from_unicode_buffer): * src/decompress.c (acc_size, accumulate_and_process_md5): * src/emacs.c (load_seccomp, shut_down_emacs): * src/fns.c (sxhash_bignum): * src/ftfont.c (get_adstyle_property): * src/image.c (lookup_image, xpm_init_color_cache) (xpm_cache_color): * src/json.c (json_out_str, struct json_parser) (json_make_object_workspace_for_slow_path) (json_make_object_workspace_for, json_parse_array) (json_parse_object): * src/sysdep.c (get_current_dir_name_or_unreachable) (init_sys_modes, convert_speed): * src/termchar.h (struct tty_display_info): * src/textconv.h (struct textconv_conversion_text): * src/xfns.c (struct x_xim_text_conversion_data) (x_encode_xim_text): * src/xselect.c (struct transfer, c_size_for_format) (x_size_for_format, selection_data_for_offset) (selection_data_size, x_start_selection_transfer) (x_continue_selection_transfer): Prefer ptrdiff_t to size_t when either will do. * src/term.c (Ftty__set_output_buffer_size): Limit output buffer size to PTRDIFF_MAX as well as to SIZE_MAX.

Avoid memsets in coding.c

2026-05-24T02:18:53Z

* src/coding.c (detect_coding_utf_16, Fset_coding_system_priority): Rewrite memset to initializers.

New function memory_full_up

2026-05-24T02:18:52Z

* src/alloc.c (memory_full_up): New function. Replace all callers of memory_full (SIZE_MAX) with callers to this function. This simplifies callers and should make future changes easier. It also saves a whopping 296 bytes in executable size with gcc 16.1.1 20260515 (Red Hat 16.1.1-2) x86-64.

Pacify -Wunused-but-set-variable from gcc 16 and clang 13

2026-04-30T05:45:52Z

* src/coding.c: Remove file wide ignore pragma for -Wunused-but-set-variable. (detect_coding_XXX) : Mention that this variable might need to be declared with the MAYBE_UNUSED attribute. (detect_coding_utf_8, detect_coding_emacs_mule, detect_coding_iso_2022) (encode_designation_at_bol, detect_coding_sjis, detect_coding_big5) (detect_coding_ccl, detect_coding_charset) : Use the MAYBE_UNUSED attribute.

Fix infloop when decoding incomplete embedded UTF-8 input

2026-03-07T11:36:58Z

* src/coding.c (decode_coding_iso_2022): Record conversion result for incomplete data.

; Add 2026 to copyright years.

2026-01-01T12:54:34Z

Fix some C symbol extern visibility

2025-12-08T18:41:50Z

Make some C symbols static if they don’t need to be extern. Also, remove a couple of functions that were discovered to be unused as a result of this process, and mark two extern functions intended to be usable from GDB. * src/buffer.c (previous_overlay_change): * src/composite.c (composition_lisp_table): * src/fileio.c (file_name_directory): * src/frame.c (check_tty): * src/insdel.c (adjust_markers_for_insert): * src/keyboard.c (unread_switch_frame, read_char) (requeued_events_pending_p): * src/sysdep.c (renameat_noreplace) [!HAVE_ANDROID]: * src/textconv.c (get_conversion_field) [!HAVE_ANDROID]: * src/treesit.c (TREESIT_BOB_LINECOL, TREESIT_TS_POINT_1_0) (treesit_buf_tracks_linecol_p, make_treesit_parser) (make_treesit_node): * src/xdisp.c (x_y_to_hpos_vpos): * src/xfaces.c (load_color) [!MSDOS]: * src/xfns.c (x_real_pos_and_offsets): * src/xterm.c (x_dnd_do_unsupported_drop): Now static. Move up if necessary. * src/coding.c (utf8_string_p): * src/keyboard.c (detect_input_pending_ignore_squeezables): Remove; unused. * src/frame.c (gui_set_alpha): * src/textconv.c (start_batch_edit, end_batch_edit, commit_text) (finish_composing_text, set_composing_text) (set_composing_region, textconv_set_point_and_mark) (delete_surrounding_text, request_point_update) (textconv_barrier, replace_text, get_extracted_text) (get_surrounding_text): * src/xdisp.c (gui_union_rectangles): * src/xterm.c (xi_frame_selected_for): Define only if needed. * src/treesit.c (treesit_debug_print_parser_list) (treesit_debug_print_linecol): Declare EXTERNALLY_VISIBLE. * src/xdisp.c (x_y_to_column_row): New function, defined only if needed. All external callers to x_y_to_hpos_vpos changed.

(decode_coding): Avoid nested *-change-functions (bug#78042)

2025-05-02T21:06:09Z

* src/coding.c (decode_coding): Avoid nested *-change-functions (bug#78042). * test/src/editfns-tests.el (sanity-check-change-functions-before) (sanity-check-change-functions-after): Record notifications in `sanity-check-change-functions-op`. (sanity-check-change-functions-with-op): Don't rely on `sanity-check-change-functions-op` always holding only the `op`. (sanity-check-change-functions-errors): Include the sequence of notifications in the error info. (editfns-tests--before/after-change-functions): Add tests for (bug#78042).

(replace-region-contents): Improve and promote (bug#76313)

2025-03-29T21:49:05Z

Swap the role of `replace-region-contents` and `replace-buffer-contents`, so `replace-region-contents` is the main function, implemented in C, and `replace-buffer-contents` is a mere wrapper (marked as obsolete). Also remove the need to rely on narrowing and on describing the new text as a function. Finally, allow MAX-SECS==0 to require a cheap replacement, and add an INHERIT argument. * src/editfns.c: Include `coding.h`. (Freplace_region_contents): Rename from `Freplace_buffer_contents`. Change calling convention to that of `replace-region-contents`. Add more options for the SOURCE argument. Add INHERIT argument. Skip the costly algorithm if MAX-SECS is 0. * src/insdel.c (replace_range): Allow NEW to be a buffer. * lisp/subr.el (replace-buffer-contents): New implementation. * lisp/emacs-lisp/subr-x.el (replace-region-contents): Delete. * doc/lispref/text.texi (Replacing): Document new API for `replace-region-contents`. Remove documentation of `replace-buffer-contents`. * test/src/editfns-tests.el (replace-buffer-contents-1) (replace-buffer-contents-2, replace-buffer-contents-bug31837): Use `replace-region-contents`. (editfns--replace-region): Delete. (editfns-tests--replace-region): Use `replace-region-contents`. Adds tests for new types of SOURCE args.

Merge from origin/emacs-30

2025-03-12T02:09:09Z

894b0e3a2fe ; Adapt comment in tramp.el cc87717fa07 Add keyword placeholder to tramp.el 7d0d61d8549 Rewrite ERT manual introduction b2f124f2a88 ; cperl-mode.el: Don't misinterpret exec_fcn as keyword exec 59d1aac49df Document return values of the various read-* functions