* src/xfaces.c (Finternal_set_lisp_face_attribute): Fix validation
of the :style attribute of :box. Previously, nil for :style was not
accepted, which causes 'mode-line-inactive' face to be rejected.
(Bug#67567)
* src/xfaces.c (Finternal_set_lisp_face_attribute): Fix the logic
of validating the :box attribute. The previous code would always
allow invalid attributes of :box as long as the invalid attribute
was the last in the list. (Bug#67404)
* doc/lispref/display.texi (Low-Level Font)
<font-xlfd-name>: Document new argument `long-xlfds'.
* etc/NEWS: Mention removal of XLFD length restrictions.
* src/font.c (font_build_object): Dynamically allocate XLFD,
permitting them to surpass 255 characters in length.
(font_parse_xlfd_1): Cease rejecting XLFDs more than 255
characters in length.
(font_dynamic_unparse_xlfd): New function. Like
font_unparse_xlfd, but allocate the XLFD dynamically.
(font_delete_unmatched): Dynamically allocate XLFD if necessary.
(Ffont_xlfd_name): New arg LONG_XLFDs. If t, return a
dynamically allocated XLFD. All callers changed.
* src/font.h: Update prototypes.
* src/fontset.c (Fnew_fontset): Dynamically allocate XLFD when
establishing fontset name.
* java/org/gnu/emacs/EmacsNative.java (scaledDensity): Announce
new argument `scaledDensity'.
* java/org/gnu/emacs/EmacsNoninteractive.java (main): Specify
new argument.
* java/org/gnu/emacs/EmacsService.java (onCreate): Compute an
adjusted DPI for the font size based on the ratio between
density and scaledDensity.
(run): Specify that adjusted density.
* src/android.c (setEmacsParams): Set
`android_scaled_pixel_density'.
* src/android.h: (android_scaled_pixel_density: New variable.
* src/androidterm.c (android_term_init): Set `font_resolution'.
* src/androidterm.h (struct android_display_info): New field.
* src/font.c (font_pixel_size, font_find_for_lface)
(font_open_for_lface, Ffont_face_attributes, Fopen_font): Use
FRAME_RES instead of FRAME_RES_Y.
* src/frame.h (FRAME_RES): New macro. Use this to convert
between font point and pixel sizes as opposed to FRAME_RES_Y.
* src/w32font.c (fill_in_logfont):
* src/xfaces.c (Fx_family_fonts, set_lface_from_font): Use
FRAME_RES instead of FRAME_RES_Y. (bug#64444)
'indicate-copied-region' checks whether the region is "highlighted"
and if not, briefly moves point to mark to give a visual cue of the
extent of text that was saved to the kill ring.
The region is considered "highlighted" if (a) it is active and (b) its
face specifies a :background. That latter condition does not account
for the multiple ways in which the face can make the region "visually
distinct" from the default face, so switch to the more extensive
predicate face-differs-from-default-p.
The patch also fixes a couple of issues with the predicate's
implementation, and introduces a new user option in case anyone
happened to enjoy unconditional blinking.
* lisp/faces.el (face-differs-from-default-p): Filter out :extend; add
rationale for the attributes we ignore.
* lisp/simple.el (copy-region-blink-predicate): Add option to let
users explicitly opt into or out of blinking point and mark.
(region-indistinguishable-p): New function to detect
"if there is currently no active region highlighting", leveraging
face-differs-from-default-p.
(indicate-copied-region): Use it.
* src/xfaces.c (merge_face_ref): Allow :stipple to be nil, since it is
a documented valid value for that attribute.
* etc/NEWS: Announce user option.
* src/xfaces.c (font_maybe_unset_attribute): Move definition...
[HAVE_WINDOW_SYSTEM] (font_maybe_unset_attribute): ...to here, since
the function is used only when we HAVE_WINDOW_SYSTEM (bug#61049).
* src/xfaces.c (syms_of_xfaces)<face-font-lax-matched-attributes>:
Change the default value to t. Update doc string.
(realize_gui_face): When 'Vface_font_lax_matched_attributes' is t,
reset the 3 default font attributes efficiently. Call
'font_maybe_unset_attribute' only if the value is neither nil nor
t. (Bug#59347)
* src/xfaces.c (font_unset_attribute): New function.
(realize_gui_face): Improve commentary and use list instead of
bitmask.
(syms_of_xfaces): Get rid of bitmask. Replace it by a list,
there is no reason any user should have to think about bitmasks
in Emacs lisp.
Between commits bf0d3f76dc (2014) and 6b1ed2f2c9 (2022),
realize_gui_face called font_load_for_lface with an empty or
partly emptied font spec, i.e. it ignored a part of its attrs
argument. The rationale given in bug#17973, which led to
bf0d3f76dc, is not clear. However, 6b1ed2f2c9, which passes
the full font spec to font_load_for_lface and
font_find_for_lface, leads to suboptimal font choices, for
example when the font chosen for the default face has a
weight, slant or width that is not supported by other
available fonts on the system, such as 'medium' or 'heavy'.
If these attributes are not unset here, the call to
font_list_entities in font_find_for_lface arbitrarily limits
the candidate font list to those that are perfect matches for
these attributes, which means that the scoring mechanism is
bypassed. Note that the size attribute in spec is also unset,
in font_find_for_lface.
Also allow unsetting the other attributes, for debugging purposes.
* src/xfaces.c (realize_gui_face): Unset the weight, slant and
width of the font spec. Fixes bug#57555 and bug#59347.
(syms_of_xfaces): New variable
'realize-gui-face-ignored-spec-attributes'.
* lisp/faces.el (x-create-frame-with-faces): New field
`delayed-font'. Set the `font-parameter' property to `font' in
the given parameter list after face-set-after-frame-default is
called.
* src/fontset.c (Fset_fontset_font): Avoid changing
`font-parameter' with the call to Fmodify_frame_parameters.
* src/frame.c (gui_set_frame_parameters_1): New function.
Factor out gui_set_frame_parameters here, and add an argument
DEFAULT_PARAMETER. If the `font' parameter is set, and
`default_parameter' is not, then set the `font-parameter' frame
parameter to the `font' parameter as well, to keep track of
which user-specified `font' frame parameter set the default
face's font on the frame.
(gui_set_frame_parameters): Call gui_set_frame_parameters_1 with
new arg set to false.
(gui_set_font): Remove broken implementation of
`font-parameter'.
(gui_default_parameter): If the default value was used, then
call gui_set_frame_parameters_1 with the new argument set to
false. This is because no font was specified as a frame
parameter by the user, so Freconsider_frame_fonts is free to do
anything it wants.
(Freconsider_frame_fonts): If `font-parameter' is set, then use
it.
(syms_of_frame): New defsym Qfont_parameter.
* src/frame.h: Update prototypes.
* src/haikuterm.c (haiku_default_font_parameter):
* src/pgtkfns.c (pgtk_default_font_parameter):
* src/w32fns.c (w32_default_font_parameter): Stop setting
`font-parameter' here. This code resulted in decades of
automatic font rescaling not working correctly.
* src/xfaces.c (set_font_frame_param): Clear the
`font-parameter' frame parameter.
(Finternal_merge_in_global_face):
* src/xfns.c (x_default_font_parameter): Avoid changing
`font-parameter' in response to changes to face attributes.
* src/xsettings.c (apply_xft_settings): Add workaround for
Cairo. (bug#59371, bug#59347, bug#59283, bug#59271, bug#59285,
bug#59306.)
* src/xfaces.c (HANDLE_INVALID_NIL_VALUE): New macro, which displays
a warning for invalid uses of nil as a face attribute value.
(Finternal_set_lisp_face_attribute): Use the macro for the attributes
:foreground, :distant-foreground and :background.
This restores the code we had in realize_gui_face before commit bf0d3f7.
The problem described in bug#17973, which led to that commit, only
happens if one uses a specific (misc-fixed) font family, not for
the usual default fonts used by Emacs, and I'm not sure what's
described there is a bug at all. At least for the purposes of
text-scale-adjust, it makes no sense to ignore the
foundry/family/adstyle of the original font, because we _want_ the
same (or very similar) font, just of a different size.
And likely in other use cases: if the :font attribute of a face
specifies some font properties, we want to keep them all, not
arbitrarily to ignore some of them. And definitely catering to an
obscure use case such as the one cited in bug#17973 is NOT a good
reason to make such radical changes in face-realization behavior.
So I think backing out that part of commit bf0d3f7 is TRT, and if
we decide that this causes bug#17973 in too many situations we care
about, I'd rather find a kludge for that specific case than do that
for every face realization.
* src/xfaces.c (realize_gui_face): Preserve face attributes when
text is scaled. This reverts part of the changes installed in
commit bf0d3f7. (Bug#37473)
* src/xfaces.c (Finternal_merge_in_global_face)
(gui_supports_face_attributes_p): Only modify local copy of face
attributes when replacing 'reset' pseudo-values with real values.
(Bug#38771)
* doc/lispref/display.texi (Face Attributes):
* etc/NEWS: Document the new pseudo-value 'reset'.
* src/xfaces.c (realize_named_face, lookup_derived_face)
(gui_supports_face_attributes_p, lookup_named_face)
(Finternal_merge_in_global_face, merge_named_face, merge_faces):
Handle the 'reset' pseudo-value of a face's attribute.
(syms_of_xfaces): New symbol 'reset'.
(RESET_P): New macro.
(check_lface_attrs, Finternal_set_lisp_face_attribute): Allow
'reset' as a value of any attribute except ':inherit'.
(Bug#38771)
* lisp/faces.el (face-attribute):
* src/xfaces.c (Fx_family_fonts):
* src/font.c (Ffont_get, Ffont_put): Improve and clarify the doc
strings.
* doc/lispref/display.texi (Low-Level Font): Document the :type
attribute of a font. Improve documentation of 'font-get' and
'font-put'.
(Attribute Functions): Add cross-reference to the description of
face attributes.
* src/xfaces.c (Fx_family_fonts): Consider fonts whose :spacing
value is numeric, but still indicates that they are proportional,
to be proportional.
* lisp/textmodes/artist.el (artist-mode): Fix test for monospaced
fonts.
`color-values-from-color-spec` (new in Emacs 28) erroneously accepted
leading whitespace and hex floats in rgbi: components.
Reported by Philip Kaludercic.
* src/xfaces.c (parse_float_color_comp): Disallow leading whitespace
and hex floats.
* test/src/xfaces-tests.el
(xfaces-internal-color-values-from-color-spec): Add test cases.
* doc/lispref/display.texi (Attribute Functions)
(Face Attributes): Clarify that the :font attribute of a face and
the font returned by 'face-font' are by default for ASCII
characters. (Bug#53664)
