Fira Code v5 is not listed as monospace anymore under Linux

[lkuty]

Under Linux, Fira Code v4 is listed as monospace:

$ fc-list -v "Fira Code Retina"
...
spacing: 90(i)(s)
...

We don't have this anymore with v5 which means that my terminal named kitty cannot use the font anymore.

[tonsky]

Oops. Fixed in 5.1. Thank you for reporting!

[salim-b]

Under Linux, Fira Code v4 is listed as monospace:

$ fc-list -v "Fira Code Retina"
...
spacing: 90(i)(s)
...

A spacing of 90 means dual-width, not monospace.

FiraCode v5.1 is still reported as dual-width:

$ fc-list :spacing=90 -f '%{family}\n' | cut -d ',' -f 1 | sort | uniq
...
Fira Code
...

If you need it to be reported as monospace (e.g. because your editor/terminal/IDE only supports monospaced fonts like RStudio), a workaround is to overwrite the spacing of FiraCode to 100 (mono) using a custom fontconfig .conf file.

[tonsky]

I wonder if RStudio is the only one having problems with dual-width?

[tonsky]

@lkuty @salim-b can you please check that this build works for you? Thanks!

@sooqua @Tatsh @zoickx or anyone with the double-width issue, can you please test this build for me? Thanks!

Fira_Code_v6.zip

[lkuty]

That looks good under Debian 10.

# unzip Fira_Code_v6.zip
# rm /usr/share/fonts/truetype/FiraCode-*
# cp *.ttf  /usr/share/fonts/truetype/
# fc-cache
# fc-list -v "Fira Code" | grep -E "family|file|width|spacing"
	family: "Fira Code"(s) "Fira Code SemiBold"(s)
	familylang: "en"(s) "en"(s)
	width: 100(f)(s)
	spacing: 100(i)(s)
	file: "/usr/share/fonts/truetype/FiraCode-SemiBold.ttf"(s)
	family: "Fira Code"(s)
	familylang: "en"(s)
	width: 100(f)(s)
	spacing: 100(i)(s)
	file: "/usr/share/fonts/truetype/FiraCode-Regular.ttf"(s)
	family: "Fira Code"(s) "Fira Code Medium"(s)
	familylang: "en"(s) "en"(s)
	width: 100(f)(s)
	spacing: 100(i)(s)
	file: "/usr/share/fonts/truetype/FiraCode-Medium.ttf"(s)
	family: "Fira Code"(s)
	familylang: "en"(s)
	width: 100(f)(s)
	spacing: 100(i)(s)
	file: "/usr/share/fonts/truetype/FiraCode-Bold.ttf"(s)
	family: "Fira Code"(s) "Fira Code Light"(s)
	familylang: "en"(s) "en"(s)
	width: 100(f)(s)
	spacing: 100(i)(s)
	file: "/usr/share/fonts/truetype/FiraCode-Light.ttf"(s)

I tested it with the kitty terminal and it is ok. I noted that the Retina font is gone.

[tonsky]

@lkuty thank you!

[salim-b]

@lkuty @salim-b can you please check that this build works for you? Thanks!

Works fine, thanks!

Before (v5.2):

$ fc-list -v "Fira Code" | grep spacing
	spacing: 90(i)(s)
	spacing: 90(i)(s)
	spacing: 90(i)(s)
	spacing: 90(i)(s)
	spacing: 90(i)(s)
	spacing: 90(i)(s)

After (v6; no Retina version included):

$ fc-list -v "Fira Code" | grep spacing
	spacing: 100(i)(s)
	spacing: 100(i)(s)
	spacing: 100(i)(s)
	spacing: 100(i)(s)
	spacing: 100(i)(s)

Now RStudio recognizes FiraCode as a possible editor font out of the box, i.e. no hackish workaround needed anymore. 🙏

[tonsky]

Thank you, that’s great to hear! Maybe we are getting somewhere after all :)

[zoickx]

(...) @zoickx or anyone with the double-width issue, can you please test this build for me? Thanks!

Fira_Code_v6.zip

Looks good to me. No double-width.

(+ just mirroring the command others have posted:

$ fc-list -v "Fira Code" | grep spacing
        spacing: 100(i)(s)

)