GitLab

	(Fprevious_property_change, Fprevious_single_property_change):
	Avoid changing limit, so we can correctly catch the case where the
	property is constant up to limit.

        (CHARS_MODIFF, BUF_CHARS_MODIFF): New macros.
        * buffer.c (Fbuffer_chars_modified_tick): New function returning
        value of BUF_CHARS_MODIFF.
        (syms_of_buffer): Defsubr it.
        (Fget_buffer_create): Initialize BUF_CHARS_MODIFF.
        * insdel.c (modify_region): New argument preserve_chars_modiff.
        Set CHARS_MODIFF to MODIFF provided preserve_chars_modiff is zero.
        (insert_1_both, insert_from_string_1, insert_from_buffer_1)
        (adjust_after_replace, adjust_after_replace_noundo)
        (replace_range, replace_range_2, del_range_2): Reset CHARS_MODIFF.
        * lisp.h (modify_region): Add fourth argument in extern.
        * casefiddle.c (casify_region): Call modify_region with fourth
        argument zero to assert that CHARS_MODIFF is updated.
        * editfns.c (Fsubst_char_in_region, Ftranslate_region_internal)
        (Ftranspose_regions): Likewise.
        * textprop.c (Fadd_text_properties, Fset_text_properties)
        (Fremove_text_properties, Fremove_list_of_text_properties):
        Call modify_region with fourth argument 1 to avoid that
        CHARS_MODIFF is updated.

* emacsclient.c (print_help_and_exit): Likewise.

* xterm.c (x_connection_closed, x_error_quitter): Mark as NO_RETURN.

* textprop.c (text_read_only): Likewise.

* lread.c (end_of_file_error): Likewise.

* lisp.h (circular_list_error, memory_full, buffer_memory_full):
Likewise.

* eval.c (unwind_to_catch): Likewise.

* buffer.h (buffer_slot_type_mismatch): Likewise.

(Fprevious_single_char_property_change):
Don't allow returning value beyond LIMIT in any cases.
(Fnext_char_property_change, Fprevious_char_property_change): Doc fix.

modify_region is called only when buffer is modified and that
signal_after_change is allways called in that case.

Return Qnil if caller wants to remove all text properties from a
string and the string already has no intervals.

(Fprevious_char_property_change): allow marker as limit.
(Fnext_single_char_property_change)
(Fprevious_single_char_property_change): Check that limit is a
number in strings.
(Fnext_single_char_property_change): Coerce position to integer.
(Fprevious_single_char_property_change): Same here.

(syms_of_textprop): Defsubr it.

(Fprevious_char_property_change)
(Fnext_single_char_property_change)
(Fprevious_single_char_property_change, Fnext_property_change)
(Fnext_single_property_change, Fprevious_property_change)
(Fprevious_single_property_change, Fadd_text_properties)
(Fput_text_property, Fset_text_properties)
(Fremove_text_properties, Fremove_list_of_text_properties)
(Ftext_property_any, Ftext_property_not_all): Clarify doc strings.

(get_char_property_and_overlay): Remove unused var `next_overlay'.
(verify_interval_modification): Use text_read_only's new arg.

Lisp_String fields.

SCHARS, SBYTES, STRING_INTERVALS, SREF, SDATA; explicit size_byte references
left unchanged for now.

(syms_of_textprop) <Vchar_property_alias_alist>: DEFVAR_LISP.

either a list or a plist.
(interval_has_some_properties_list): New function, like
interval_has_some_properties using list instead of plist.
All callers changed.
(Fremove_list_of_text_properties): New function.
(syms_of_textprop): Defsubr it.

(Fprevious_property_change, Fprevious_single_property_change):
Stay within the narrowed-buffer boundaries.

Do nothing if range is empty.

`prev_changed', `s' and `len'.

(set_text_properties): Use set_text_properties_1.

with lisp system changes.