Test fancy-regex mode in CI

.travis.yml

@@ -26,8 +26,11 @@ cache:
 script:
   - cargo build
   - cargo test --features metadata
+  # Run these tests in release mode since they're slow as heck otherwise
+  - cargo test --features default-fancy --no-default-features --release
   - make assets
   - make syntest
+  - make syntest-fancy
   - rm -Rf examples
   # Only run doc build on stable until this is fixed: https://github.com/rust-lang/rust/issues/51661
   - |

Makefile

@@ -26,6 +26,13 @@ syntest: $(SUBMODULES)
 	cargo run --release --example syntest -- testdata/Packages testdata/Packages --summary | diff -U 1000000 testdata/known_syntest_failures.txt -
 	@echo No new failures!
 
+syntest-fancy: $(SUBMODULES)
+	@echo Tip: Run make update-known-failures to update the known failures file.
+	cargo run --features default-fancy --no-default-features --release --example syntest -- testdata/Packages testdata/Packages --summary | diff -U 1000000 testdata/known_syntest_failures_fancy.txt -
+	@echo No new failures!
+
 update-known-failures: $(SUBMODULES)
 	cargo run --release --example syntest -- testdata/Packages testdata/Packages --summary | tee testdata/known_syntest_failures.txt
 
+update-known-failures-fancy: $(SUBMODULES)
+	cargo run --features default-fancy --no-default-features --release --example syntest -- testdata/Packages testdata/Packages --summary | tee testdata/known_syntest_failures_fancy.txt

testdata/known_syntest_failures_fancy.txt

@@ -0,0 +1,4 @@
+loading syntax definitions from testdata/Packages
+FAILED testdata/Packages/C#/tests/syntax_test_Strings.cs: 38
+FAILED testdata/Packages/LaTeX/syntax_test_latex.tex: 1
+exiting with code 1