`font-gnu-unifont` download link broken

Localisez la définition du cask pour font-gnu-unifont et comparez son URL de téléchargement avec l’adresse fonctionnelle indiquée dans l’issue. Exécutez brew install --cask font-gnu-unifont et confirmez que le téléchargement ne renvoie plus de 404.

Verification

• I understand that if I ignore these instructions, my issue may be closed without review.
• I have retried my command with --force.
• I ran brew update-reset && brew update and retried my command.
• I ran brew doctor, fixed as many issues as possible and retried my command.
• I have checked the instructions for reporting bugs.
• I made doubly sure this is not a checksum does not match / SHA256 mismatch error (do not open an issue before trying to open a PR to fix first).
• I did not use AI/LLM to create this issue, or I disclosed the tool and model used; I will answer maintainer questions myself without AI/LLM.

Description of issue

Hello! Installing the latest font-gnu-unifont returns a download error. I tried the download link in a browser and it returns a 404.

The correct address seems to be https://unifoundry.com/pub/unifont/unifont-18.0.01/font-builds/unifont-18.0.01.otf

Command that failed

brew install --cask font-gnu-unifont

Output of command with --verbose --debug

/opt/homebrew/Library/Homebrew/brew.rb (Cask::CaskLoader::FromAPILoader): loading font-gnu-unifont
==> Would install 1 cask:
font-gnu-unifont
/usr/bin/env /opt/homebrew/Library/Homebrew/shims/shared/curl --disable --cookie /dev/null --globoff --show-error --user-agent Homebrew/7.0.4\ \(Macintosh\;\ arm64\ Mac\ OS\ X\ 26.6.2\)\ curl/8.7.1 --header Accept-Language:\ en --retry 3 -V
/usr/bin/env /opt/homebrew/Library/Homebrew/shims/shared/curl --disable --cookie /dev/null --globoff --show-error --user-agent Homebrew/7.0.4\ \(Macintosh\;\ arm64\ Mac\ OS\ X\ 26.6.2\)\ curl/8.7.1 --header Accept-Language:\ en --retry 3 --fail --location --silent --head https://ftpmirror.gnu.org/gnu/unifont/unifont-18.0.01/unifont-18.0.01.tar.gz
/usr/bin/env /opt/homebrew/Library/Homebrew/shims/shared/curl --disable --cookie /dev/null --globoff --show-error --user-agent Homebrew/7.0.4\ \(Macintosh\;\ arm64\ Mac\ OS\ X\ 26.6.2\)\ curl/8.7.1 --header Accept-Language:\ en --retry 3 --fail --location --silent --head --request GET --http1.1 https://ftpmirror.gnu.org/gnu/unifont/unifont-18.0.01/unifont-18.0.01.tar.gz
==> Fetching downloads for: font-gnu-unifont
/usr/bin/env /opt/homebrew/Library/Homebrew/shims/shared/curl --disable --cookie /dev/null --globoff --show-error --user-agent Homebrew/7.0.4\ \(Macintosh\;\ arm64\ Mac\ OS\ X\ 26.6.2\)\ curl/8.7.1 --header Accept-Language:\ en --retry 3 --fail --location --silent --head https://ftpmirror.gnu.org/gnu/unifont/unifont-18.0.01/unifont-18.0.01.tar.gz
/usr/bin/env /opt/homebrew/Library/Homebrew/shims/shared/curl --disable --cookie /dev/null --globoff --show-error --user-agent Homebrew/7.0.4\ \(Macintosh\;\ arm64\ Mac\ OS\ X\ 26.6.2\)\ curl/8.7.1 --header Accept-Language:\ en --retry 3 --fail --location --silent --head --request GET --http1.1 https://ftpmirror.gnu.org/gnu/unifont/unifont-18.0.01/unifont-18.0.01.tar.gz
✘ Cask font-gnu-unifont (18.0.01)
Error: Download failed on Cask 'font-gnu-unifont' with message: Download failed: https://ftpmirror.gnu.org/gnu/unifont/unifont-18.0.01/unifont-18.0.01.tar.gz
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   154  100   154    0     0    361      0 --:--:-- --:--:-- --:--:--   361
  0   146    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (22) The requested URL returned error: 404
Error: font-gnu-unifont: Download failed for font-gnu-unifont.

Output of brew doctor and brew config

Warning: You have unlinked kegs in your Cellar.
Leaving kegs unlinked can lead to build-trouble and cause formulae that depend on
those kegs to fail to run properly once built.

Run `brew link` on these:
  lcdf-typetools



HOMEBREW_VERSION: 7.0.4
ORIGIN: https://github.com/Homebrew/brew
HEAD: edb70f031e4170c780799633a1226ff73e1077f4
Last commit: 4 days ago
Branch: stable
Core tap: N/A
Core cask tap: N/A
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_EDITOR: /opt/homebrew/bin/vim
Homebrew Ruby: 4.0.7 => /opt/homebrew/Library/Homebrew/vendor/portable-ruby/4.0.7/bin/ruby
CPU: octa-core 64-bit arm_firestorm_icestorm
Clang: 21.0.0 build 2100
Git: 2.55.0 => /opt/homebrew/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 26.6.2-arm64
CLT: 27.0.0.0.1788430756
Xcode: N/A
Rosetta 2: false

Output of brew tap

dart-lang/dart
microsoft/git
romkatv/powerlevel10k
sass/sass
stefanocoretta/smallcaps