Respect fontconfig's embeddedbitmap setting

Fixes #2655.

CHANGELOG.md

@@ -31,6 +31,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Debug ref tests are now written to disk regardless of shutdown method
 - Cursor color setting with escape sequence
 - Override default bindings with subset terminal mode match
+- On Linux, respect fontconfig's `embeddedbitmap` configuration option
 
 ## 0.3.3
 

font/src/ft/mod.rs

@@ -347,9 +347,10 @@ impl FreeTypeRasterizer {
         let antialias = pat.antialias().next().unwrap_or(true);
         let hinting = pat.hintstyle().next().unwrap_or(fc::HintStyle::Slight);
         let rgba = pat.rgba().next().unwrap_or(fc::Rgba::Unknown);
+        let embedded_bitmaps = pat.embeddedbitmap().next().unwrap_or(true);
 
         use freetype::face::LoadFlag;
-        match (antialias, hinting, rgba) {
+        let mut flags = match (antialias, hinting, rgba) {
             (false, fc::HintStyle::None, _) => LoadFlag::NO_HINTING | LoadFlag::MONOCHROME,
             (false, ..) => LoadFlag::TARGET_MONO | LoadFlag::MONOCHROME,
             (true, fc::HintStyle::None, _) => LoadFlag::NO_HINTING | LoadFlag::TARGET_NORMAL,
@@ -378,7 +379,13 @@ impl FreeTypeRasterizer {
             // TODO should Medium/Full control whether to use the auto hinter?
             (true, _, fc::Rgba::Unknown) => LoadFlag::TARGET_NORMAL,
             (true, _, fc::Rgba::None) => LoadFlag::TARGET_NORMAL,
+        };
+
+        if !embedded_bitmaps {
+            flags |= LoadFlag::NO_BITMAP;
         }
+
+        flags
     }
 
     fn ft_render_mode(pat: &fc::Pattern) -> freetype::RenderMode {