Lexer fails to recognize files named CMakeLists.txt

[jdumas]

Using a freshly installed version on macOS (installed via go get -u github.com/alecthomas/chroma/cmd/chroma), chroma fails to recognize the CMake language on files named CMakeListst.txt:

make_minimum_required(VERSION 3.1)
project(foo)

❯ ~/go/bin/chroma --trace --json CMakeLists.txt
root: pos=0, text="make_minimum_required(VERSION 3.1)\nproject(foo)\n\n"
root: pos=34, text="\nproject(foo)\n\n"
root: pos=35, text="project(foo)\n\n"
root: pos=47, text="\n\n"
root: pos=48, text="\n"
[
  {"type":"Text","value":"make_minimum_required(VERSION 3.1)\nproject(foo)\n\n"}
]

If the file has the .cmake extension it works fine:

❯ ~/go/bin/chroma --trace --json foo.cmake
root: pos=0, text="make_minimum_required(VERSION 3.1)\nproject(foo)\n\n"
args: pos=22, text="VERSION 3.1)\nproject(foo)\n\n"
args: pos=29, text=" 3.1)\nproject(foo)\n\n"
args: pos=30, text="3.1)\nproject(foo)\n\n"
args: pos=33, text=")\nproject(foo)\n\n"
root: pos=34, text="\nproject(foo)\n\n"
root: pos=35, text="project(foo)\n\n"
args: pos=43, text="foo)\n\n"
args: pos=46, text=")\n\n"
root: pos=47, text="\n\n"
root: pos=48, text="\n"
[
  {"type":"NameBuiltin","value":"make_minimum_required"},
  {"type":"Punctuation","value":"("},
  {"type":"LiteralString","value":"VERSION"},
  {"type":"Text","value":" "},
  {"type":"LiteralString","value":"3.1"},
  {"type":"Punctuation","value":")"},
  {"type":"Error","value":"\n"},
  {"type":"NameBuiltin","value":"project"},
  {"type":"Punctuation","value":"("},
  {"type":"LiteralString","value":"foo"},
  {"type":"Punctuation","value":")"},
  {"type":"Error","value":"\n\n"}
]

Looking at the code it seems that chroma should recognize file named CMakeListst.txt, so I'm not sure why this doesn't work here.

[alecthomas]

This was because typoscript (whatever that is) and plaintext both match *.txt and had the same priority as cmake.

[jdumas]

Awesome, thanks for the quick fix!