WIP add IBM Plex Sans

(base) natebutler@Nate16 zed % cargo run
   Compiling zed v0.99.0 (/Users/natebutler/Code/zed/zed/crates/zed)
    Finished dev [unoptimized + debuginfo] target(s) in 9.15s
     Running `target/debug/Zed`
Thread "main" panicked with "called `Result::unwrap()` on an `Err` value: parse error" at crates/zed/src/main.rs:667:10
   0: backtrace::backtrace::libunwind::trace
             at /Users/natebutler/.cargo/registry/src/index.crates.io-6f17d22bba15001f/backtrace-0.3.68/src/backtrace/libunwind.rs:93:5
      backtrace::backtrace::trace_unsynchronized
             at /Users/natebutler/.cargo/registry/src/index.crates.io-6f17d22bba15001f/backtrace-0.3.68/src/backtrace/mod.rs:66:5
   1: backtrace::backtrace::trace
             at /Users/natebutler/.cargo/registry/src/index.crates.io-6f17d22bba15001f/backtrace-0.3.68/src/backtrace/mod.rs:53:14
   2: backtrace::capture::Backtrace::create
             at /Users/natebutler/.cargo/registry/src/index.crates.io-6f17d22bba15001f/backtrace-0.3.68/src/capture.rs:176:9
   3: backtrace::capture::Backtrace::new
             at /Users/natebutler/.cargo/registry/src/index.crates.io-6f17d22bba15001f/backtrace-0.3.68/src/capture.rs:140:22
   4: Zed::init_panic_hook::{{closure}}
             at crates/zed/src/main.rs:436:29
   5: std::panicking::rust_panic_with_hook
   6: std::panicking::begin_panic_handler::{{closure}}
   7: std::sys_common::backtrace::__rust_end_short_backtrace
   8: _rust_begin_unwind
   9: core::panicking::panic_fmt
  10: core::result::unwrap_failed
  11: core::result::Result<T,E>::unwrap
             at /private/tmp/rust-20230613-7622-103lepv/rustc-1.70.0-src/library/core/src/result.rs:1089:23
  12: Zed::load_embedded_fonts
             at crates/zed/src/main.rs:664:5
  13: Zed::main
             at crates/zed/src/main.rs:80:5
  14: core::ops::function::FnOnce::call_once
             at /private/tmp/rust-20230613-7622-103lepv/rustc-1.70.0-src/library/core/src/ops/function.rs:250:5
  15: std::sys_common::backtrace::__rust_begin_short_backtrace
             at /private/tmp/rust-20230613-7622-103lepv/rustc-1.70.0-src/library/std/src/sys_common/backtrace.rs:134:18
  16: std::rt::lang_start::{{closure}}
             at /private/tmp/rust-20230613-7622-103lepv/rustc-1.70.0-src/library/std/src/rt.rs:166:18
  17: std::panicking::try
  18: std::rt::lang_start_internal
  19: std::rt::lang_start
             at /private/tmp/rust-20230613-7622-103lepv/rustc-1.70.0-src/library/std/src/rt.rs:165:17
  20: _mai

assets/fonts/plex/LICENSE.txt

@@ -0,0 +1,93 @@
+Copyright © 2017 IBM Corp. with Reserved Font Name "Plex"
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+
+This license is copied below, and is also available with a FAQ at: http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

crates/zed/src/zed.rs

@@ -2327,6 +2327,11 @@ mod tests {
                     .unwrap()
                     .to_vec()
                     .into(),
+                Assets
+                    .load("fonts/plex/IBMPlexSans-Regular.ttf")
+                    .unwrap()
+                    .to_vec()
+                    .into(),
             ])
             .unwrap();
         let themes = ThemeRegistry::new(Assets, cx.font_cache().clone());

styles/src/common.ts

@@ -3,6 +3,7 @@ export * from "./theme"
 export { chroma }
 
 export const font_families = {
+    ui_sans: "IBM Plex Sans",
     sans: "Zed Sans",
     mono: "Zed Mono",
 }