Re: git: 27358245644c - main - freebsd-tips: Add fortune to find font providing Unicode character

On Tue, 2024-05-14 at 08:55, Baptiste Daroussin <bapt@freebsd.org> wrote:

> On Mon 13 May 23:02, Joseph Mingrone wrote:
>> The branch main has been updated by jrm:

>> URL: https://cgit.FreeBSD.org/src/commit/?id=27358245644c2a8bf2b57182e2fcd8cdf18d6b8d

>> commit 27358245644c2a8bf2b57182e2fcd8cdf18d6b8d
>> Author:     Joseph Mingrone <jrm@FreeBSD.org>
>> AuthorDate: 2024-05-13 18:38:13 +0000
>> Commit:     Joseph Mingrone <jrm@FreeBSD.org>
>> CommitDate: 2024-05-13 23:02:17 +0000

>>     freebsd-tips: Add fortune to find font providing Unicode character

>>     Reviewed by:    emaste
>>     Sponsored by:   The FreeBSD Foundation
>>     Differential Revision:  https://reviews.freebsd.org/D45183
>> ---
>>  usr.bin/fortune/datfiles/freebsd-tips | 14 ++++++++++++++
>>  1 file changed, 14 insertions(+)

>> diff --git a/usr.bin/fortune/datfiles/freebsd-tips b/usr.bin/fortune/datfiles/freebsd-tips
>> index 028a9e9b1430..e24d3640b8c6 100644
>> --- a/usr.bin/fortune/datfiles/freebsd-tips
>> +++ b/usr.bin/fortune/datfiles/freebsd-tips
>> @@ -845,3 +845,17 @@ kern.tty_info_kstacks to 0 (off), 1 (on), or 2 (verbose), e.g.:

>>  		-- Michael Gmelin <grembo@FreeBSD.org>
>>  %
>> +
>> +Under X Windows, you can determine which fonts provide a particular Unicode
>> +character using fc-list from the fontconfig package.  For example, if your
>> +friend complains that the emoji you sent won't display, run fc-list with the hex
>> +value of the character to determine which font your friend should install.

> This has nothing to do with X window, it is valid for anything that can use
> fontconfig, which does not include xorg, but the toolkits or the libraries which
> needs to deal with fonts, for instance many non "X windows" applications,
> depends on fontconfig and this tips is valide for them, for example for
> libraries producing podofo or poppler can use fontconfig to decide which font to
> embeded in the pdf document.

> In my opinion the "Under X Windows" should be removed from this tips.

The objective was to strike a balance between utmost precision and
succinctness, so the tip is helpful.  Indeed, fontconfig is not directly
tied to X windows, but for practical purposes, I presumed the vast
majority of user-facing applications using fontconfig run under X
Windows (now that Wayland is a thing, I should have used a more generic
phrase like "Under a graphical environment...").  Removing the qualifier
seems to imply fc-list will always be useful, which isn't the case.
Does the tweaked text that includes 'may be helpful' work for you?

Joe

###

To determine which fonts provide a particular Unicode character, fc-list
from the fontconfig package may be helpful.  For example, if your friend
complains that the emoji you sent won't display, run fc-list with the
hex value of the character to determine which font your friend should
install.

$ fc-list ':charset=0x1F4A1'
/usr/local/share/fonts/noto/NotoColorEmoji.ttf: Noto Color Emoji:style=Regular

$ pkg which /usr/local/share/fonts/noto/NotoColorEmoji.ttf
/usr/local/share/fonts/noto/NotoColorEmoji.ttf was installed by package noto-emoji-2.042