* bug#73777: set-fontset-font doesn't set :size for specific characters when using some fonts
@ 2024-10-12 19:10 Rodrigo Morales
2024-10-18 6:27 ` Eli Zaretskii
0 siblings, 1 reply; 7+ messages in thread
From: Rodrigo Morales @ 2024-10-12 19:10 UTC (permalink / raw)
To: 73777
I am using GNU Emacs 29.4 in Ubuntu 22.04.5 LTS.
Today, I was trying to change the font size for the character =“= (#x201C, LEFT DOUBLE QUOTATION MARK) using the sexp shown below. I noticed an inconsistency: that sexp only sets the size for the character =“= when specific fonts are used.
#+BEGIN_SRC elisp
(set-fontset-font t ?“ (font-spec :family "Noto Sans Mono" :size 50))
#+END_SRC
In the section below, I describe minimal reproducible experiments. In the experiments, I use the file =/tmp/a.txt= containing the contents of the code block below:
#+HEADER: :tangle /tmp/a.txt
#+BEGIN_SRC text
a “ b
#+END_SRC
** Experiment 1 (:size for #x201C is not set): Set :size for #x201C
I started Emacs using the command shown below:
#+HEADER: :eval no
#+BEGIN_SRC sh
./src/emacs -Q /tmp/a.txt
#+END_SRC
The code block below shows the font reported for each character by calling =what-cursor-position= with a prefix argument. Screenshot: https://archive.is/9LxOH
#+BEGIN_SRC text
a: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-16-*-*-*-*-0-iso10646-1 (#x44)
“: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-16-*-*-*-*-0-iso10646-1 (#x209)
b: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-16-*-*-*-*-0-iso10646-1 (#x45)
#+END_SRC
Then, I evaluated the sexp shown below. Upon evaluating it, the size of the character “ (#x201C, LEFT DOUBLE QUOTATION MARK) didn't seem to increase. The second code block below shows the font reported for each character by calling =what-cursor-position= with a prefix argument. Screenshot: https://archive.ph/rVZSt
#+begin_src elisp
(set-fontset-font t ?“ (font-spec :family "Noto Sans Mono" :size 50))
#+end_src
#+BEGIN_SRC text
a: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-16-*-*-*-*-0-iso10646-1 (#x44)
“: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-16-*-*-*-*-0-iso10646-1 (#x209)
b: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-16-*-*-*-*-0-iso10646-1 (#x45)
#+END_SRC
** Experiment 2 (:size for #x201C is not set): Pass "Noto Sans Mono 10" to set-frame-font, then set :size for #x201C
I started Emacs using the command shown below:
#+HEADER: :eval no
#+BEGIN_SRC sh
./src/emacs -Q /tmp/a.txt
#+END_SRC
First, I evaluated the sexp shown in the first code block below. The second code block below shows the font reported for each character by calling =what-cursor-position= with a prefix argument. Screenshot: https://archive.ph/PVc8q
#+begin_src elisp
(set-frame-font "Noto Sans Mono 10" nil t)
#+end_src
#+BEGIN_SRC text
a: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-15-*-*-*-*-0-iso10646-1 (#x44)
“: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-15-*-*-*-*-0-iso10646-1 (#x209)
b: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-15-*-*-*-*-0-iso10646-1 (#x45)
#+END_SRC
Then, I evaluated the sexp shown below. Upon evaluating it, the size of the character “ (#x201C, LEFT DOUBLE QUOTATION MARK) didn't seem to increase. The second code block below shows the font reported for each character by calling =what-cursor-position= with a prefix argument. Screenshot: https://archive.is/AIuP0
#+begin_src elisp
(set-fontset-font t ?“ (font-spec :family "Noto Sans Mono" :size 50))
#+end_src
#+BEGIN_SRC text
a: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-15-*-*-*-*-0-iso10646-1 (#x44)
“: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-15-*-*-*-*-0-iso10646-1 (#x209)
b: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-15-*-*-*-*-0-iso10646-1 (#x45)
#+END_SRC
** Experiment 3 (:size for #x201C is set): Pass "Fixed 5" to set-frame-font, then set :family and :size for #x201C
I started Emacs using the command shown below:
#+HEADER: :eval no
#+BEGIN_SRC sh
./src/emacs -Q /tmp/a.txt
#+END_SRC
First, I evaluated the sexp shown in the first code block below. The second code block below shows the font reported for each character by calling =what-cursor-position= with a prefix argument. Screenshot: https://archive.is/v4Sr9
#+begin_src elisp
(set-frame-font "Fixed 5" nil t)
#+end_src
#+BEGIN_SRC text
a: ftcrhb:-Misc-Fixed-regular-normal-normal-*-7-*-*-*-c-50-iso10646-1 (#x62)
“: ftcrhb:-Misc-Fixed-medium-normal-normal-ja-13-*-*-*-c-120-iso10646-1 (#x3A3)
b: ftcrhb:-Misc-Fixed-regular-normal-normal-*-7-*-*-*-c-50-iso10646-1 (#x63)
#+END_SRC
Then, I evaluated the sexp shown below. Upon evaluating it, the size of the character “ (#x201C, LEFT DOUBLE QUOTATION MARK) significantly increased. The second code block below shows the font reported for each character by calling =what-cursor-position= with a prefix argument. Screenshot: https://archive.is/KYRGd
#+begin_src elisp
(set-fontset-font t ?“ (font-spec :family "Noto Sans Mono" :size 50))
#+end_src
#+BEGIN_SRC text
a: ftcrhb:-Misc-Fixed-regular-normal-normal-*-7-*-*-*-c-50-iso10646-1 (#x62)
“: ftcrhb:-GOOG-Noto Sans Mono-regular-normal-normal-*-50-*-*-*-*-0-iso10646-1 (#x209)
b: ftcrhb:-Misc-Fixed-regular-normal-normal-*-7-*-*-*-c-50-iso10646-1 (#x63)
#+END_SRC
** Conclusion
When the default font is not changed (see experiment 1) or is set using =(set-frame-font "Noto Sans Mono 10" nil t)= (see experiment 2), the sexp =(set-fontset-font t ?“ (font-spec :family "Noto Sans Mono" :size 50))= didn't seem to increase the size of the character “ (#x201C, LEFT DOUBLE QUOTATION MARK).
When the default font is set using =(set-frame-font "Fixed 5" nil t)= (see experiment 3), the sexp =(set-fontset-font t ?“ (font-spec :family "Noto Sans Mono" :size 50))= significantly increased the size of the character “ (#x201C, LEFT DOUBLE QUOTATION MARK).
To me, the expected behavior is that =(set-fontset-font t ?“ (font-spec :family "Noto Sans Mono" :size 50))= sets =:family= and =:size= for “ (#x201C, LEFT DOUBLE QUOTATION MARK) regardless of the font that is being used.
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#73777: set-fontset-font doesn't set :size for specific characters when using some fonts
2024-10-12 19:10 bug#73777: set-fontset-font doesn't set :size for specific characters when using some fonts Rodrigo Morales
@ 2024-10-18 6:27 ` Eli Zaretskii
2024-10-19 0:55 ` Rodrigo Morales
0 siblings, 1 reply; 7+ messages in thread
From: Eli Zaretskii @ 2024-10-18 6:27 UTC (permalink / raw)
To: Rodrigo Morales; +Cc: 73777
> From: Rodrigo Morales <rodrigo-mailing-lists@morales.pe>
> Date: Sat, 12 Oct 2024 14:10:25 -0500
>
>
> I am using GNU Emacs 29.4 in Ubuntu 22.04.5 LTS.
>
> Today, I was trying to change the font size for the character =“= (#x201C, LEFT DOUBLE QUOTATION MARK) using the sexp shown below. I noticed an inconsistency: that sexp only sets the size for the character =“= when specific fonts are used.
>
> #+BEGIN_SRC elisp
> (set-fontset-font t ?“ (font-spec :family "Noto Sans Mono" :size 50))
> #+END_SRC
Before I start digging into how we handle :size in a fontset, I have
two questions:
. did you reset use-default-font-for-symbols to nil? without that,
Emacs prefers to use the default face's font for punctuation and
symbols, effectively disregarding the fontsets
. which fonts did you find problematic in this case? you say
"specific fonts", but it is not clear which fonts exhibit this
behavior
Thanks.
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#73777: set-fontset-font doesn't set :size for specific characters when using some fonts
2024-10-18 6:27 ` Eli Zaretskii
@ 2024-10-19 0:55 ` Rodrigo Morales
2024-10-19 6:36 ` Eli Zaretskii
0 siblings, 1 reply; 7+ messages in thread
From: Rodrigo Morales @ 2024-10-19 0:55 UTC (permalink / raw)
To: Eli Zaretskii, Rodrigo Morales; +Cc: 73777
> . did you reset use-default-font-for-symbols to nil? without that,
> Emacs prefers to use the default face's font for punctuation and
> symbols, effectively disregarding the fontsets
No. I didn't know that the variable use-default-font-for-symbols existed
when I wrote that message. Now that I know of its existence, I believe
that Emacs behaves consistently with regards to what I mentioned in my
first message.
> . which fonts did you find problematic in this case? you say
> "specific fonts", but it is not clear which fonts exhibit this
> behavior
I thought that the font which was problematic was "Noto Sans Mono"
because when I used that font (in "Experiment 1" and "Experiment 2"), I
could not increase the size of the character “ (#x201C, LEFT DOUBLE
QUOTATION MARK) by evaluating (set-fontset-font t ?“ (font-spec :family
"Noto Sans Mono" :size 50)), . However, when I used "Fixed 5" (in
"Experiment 3"), evaluating (set-fontset-font t ?“ (font-spec :family
"Noto Sans Mono" :size 50)) did increase the size of the character
(#x201C, LEFT DOUBLE QUOTATION MARK).
Now that I know that the variable use-default-font-for-symbols controls
whether Emacs should honor fontsets, I don't think there's a problematic
font, instead it was my fault for not correctly knowing the variable
that instruct Emacs that it shoud honor fontsets.
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#73777: set-fontset-font doesn't set :size for specific characters when using some fonts
2024-10-19 0:55 ` Rodrigo Morales
@ 2024-10-19 6:36 ` Eli Zaretskii
2024-10-19 16:17 ` Rodrigo Morales
2024-10-21 9:47 ` Robert Pluim
0 siblings, 2 replies; 7+ messages in thread
From: Eli Zaretskii @ 2024-10-19 6:36 UTC (permalink / raw)
To: Rodrigo Morales; +Cc: 73777
> From: Rodrigo Morales <rodrigo-mailing-lists@morales.pe>
> CC: <73777@debbugs.gnu.org>
> Date: Fri, 18 Oct 2024 19:55:39 -0500
>
> > . did you reset use-default-font-for-symbols to nil? without that,
> > Emacs prefers to use the default face's font for punctuation and
> > symbols, effectively disregarding the fontsets
>
> No. I didn't know that the variable use-default-font-for-symbols existed
> when I wrote that message. Now that I know of its existence, I believe
> that Emacs behaves consistently with regards to what I mentioned in my
> first message.
>
> > . which fonts did you find problematic in this case? you say
> > "specific fonts", but it is not clear which fonts exhibit this
> > behavior
>
> I thought that the font which was problematic was "Noto Sans Mono"
> because when I used that font (in "Experiment 1" and "Experiment 2"), I
> could not increase the size of the character “ (#x201C, LEFT DOUBLE
> QUOTATION MARK) by evaluating (set-fontset-font t ?“ (font-spec :family
> "Noto Sans Mono" :size 50)), . However, when I used "Fixed 5" (in
> "Experiment 3"), evaluating (set-fontset-font t ?“ (font-spec :family
> "Noto Sans Mono" :size 50)) did increase the size of the character
> (#x201C, LEFT DOUBLE QUOTATION MARK).
>
> Now that I know that the variable use-default-font-for-symbols controls
> whether Emacs should honor fontsets, I don't think there's a problematic
> font, instead it was my fault for not correctly knowing the variable
> that instruct Emacs that it shoud honor fontsets.
It's an obscure variable, not mentioned in any manuals (because we
don't believe someone will want to specify a separate font for
punctuation characters). It's a little wonder you didn't know about
it.
So does this mean we can now close this bug? Or are there any
left-overs we still need to handle?
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#73777: set-fontset-font doesn't set :size for specific characters when using some fonts
2024-10-19 6:36 ` Eli Zaretskii
@ 2024-10-19 16:17 ` Rodrigo Morales
2024-10-19 16:19 ` Eli Zaretskii
2024-10-21 9:47 ` Robert Pluim
1 sibling, 1 reply; 7+ messages in thread
From: Rodrigo Morales @ 2024-10-19 16:17 UTC (permalink / raw)
To: Eli Zaretskii, Rodrigo Morales; +Cc: 73777
Eli Zaretskii <eliz@gnu.org> writes:
> So does this mean we can now close this bug? Or are there any
> left-overs we still need to handle?
We can close this bug.
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#73777: set-fontset-font doesn't set :size for specific characters when using some fonts
2024-10-19 16:17 ` Rodrigo Morales
@ 2024-10-19 16:19 ` Eli Zaretskii
0 siblings, 0 replies; 7+ messages in thread
From: Eli Zaretskii @ 2024-10-19 16:19 UTC (permalink / raw)
To: Rodrigo Morales; +Cc: 73777-done
> From: Rodrigo Morales <rodrigo-mailing-lists@morales.pe>
> CC: <73777@debbugs.gnu.org>
> Date: Sat, 19 Oct 2024 11:17:22 -0500
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> > So does this mean we can now close this bug? Or are there any
> > left-overs we still need to handle?
>
> We can close this bug.
Thanks, closing.
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#73777: set-fontset-font doesn't set :size for specific characters when using some fonts
2024-10-19 6:36 ` Eli Zaretskii
2024-10-19 16:17 ` Rodrigo Morales
@ 2024-10-21 9:47 ` Robert Pluim
1 sibling, 0 replies; 7+ messages in thread
From: Robert Pluim @ 2024-10-21 9:47 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: 73777, Rodrigo Morales
>>>>> On Sat, 19 Oct 2024 09:36:51 +0300, Eli Zaretskii <eliz@gnu.org> said:
>>
>> Now that I know that the variable use-default-font-for-symbols controls
>> whether Emacs should honor fontsets, I don't think there's a problematic
>> font, instead it was my fault for not correctly knowing the variable
>> that instruct Emacs that it shoud honor fontsets.
Eli> It's an obscure variable, not mentioned in any manuals (because we
Eli> don't believe someone will want to specify a separate font for
Eli> punctuation characters). It's a little wonder you didn't know about
Eli> it.
Itʼs in the docstring for `set-fontset-font' and in the manuals as of
emacs-30.
Robert
--
^ permalink raw reply [flat|nested] 7+ messages in thread
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-- links below jump to the message on this page --
2024-10-12 19:10 bug#73777: set-fontset-font doesn't set :size for specific characters when using some fonts Rodrigo Morales
2024-10-18 6:27 ` Eli Zaretskii
2024-10-19 0:55 ` Rodrigo Morales
2024-10-19 6:36 ` Eli Zaretskii
2024-10-19 16:17 ` Rodrigo Morales
2024-10-19 16:19 ` Eli Zaretskii
2024-10-21 9:47 ` Robert Pluim
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