Add env setting for ignore_system_fonts (#6092)

crates/typst-cli/src/args.rs

@@ -361,7 +361,7 @@ pub struct FontArgs {
 
     /// Ensures system fonts won't be searched, unless explicitly included via
     /// `--font-path`.
-    #[arg(long)]
+    #[arg(long, env = "TYPST_IGNORE_SYSTEM_FONTS")]
     pub ignore_system_fonts: bool,
 }
 

crates/typst-cli/src/world.rs

@@ -210,7 +210,9 @@ impl World for SystemWorld {
     }
 
     fn font(&self, index: usize) -> Option<Font> {
-        self.fonts[index].get()
+        // comemo's validation may invoke this function with an invalid index. This is
+        // impossible in typst-cli but possible if a custom tool mutates the fonts.
+        self.fonts.get(index)?.get()
     }
 
     fn today(&self, offset: Option<i64>) -> Option<Datetime> {

crates/typst-ide/src/tests.rs

@@ -97,7 +97,7 @@ impl World for TestWorld {
     }
 
     fn font(&self, index: usize) -> Option<Font> {
-        Some(self.base.fonts[index].clone())
+        self.base.fonts.get(index).cloned()
     }
 
     fn today(&self, _: Option<i64>) -> Option<Datetime> {

crates/typst-library/translations/cs.txt

@@ -4,5 +4,5 @@ equation = Rovnice
 bibliography = Bibliografie
 heading = Kapitola
 outline = Obsah
-raw = Seznam
+raw = Výpis
 page = strana

docs/src/html.rs

@@ -498,7 +498,7 @@ impl World for DocWorld {
     }
 
     fn font(&self, index: usize) -> Option<Font> {
-        Some(FONTS.1[index].clone())
+        FONTS.1.get(index).cloned()
     }
 
     fn today(&self, _: Option<i64>) -> Option<Datetime> {

tests/src/world.rs

@@ -67,7 +67,7 @@ impl World for TestWorld {
     }
 
     fn font(&self, index: usize) -> Option<Font> {
-        Some(self.base.fonts[index].clone())
+        self.base.fonts.get(index).cloned()
     }
 
     fn today(&self, _: Option<i64>) -> Option<Datetime> {