fmt: fix comment line number in file with crlf line separator

[Krchi]

fix #23524
file with crlf line separator will replace with lf after format
#23629 it could be same problem

[huly-for-github]

Connected to Huly®: V_0.6-23924

[spytheman]

Please add a test case.

[spytheman]

The test can be a pair of xxx_input.vv/xxx_expected.vv files, where the input version has the CRLF line endings (you can check with xxd).

[spytheman]

You will probably also need to add an vlib/v/fmt/tests/.gitattributes file, similar to ./vlib/v/checker/tests/.gitattributes, which contains:

*_crlf_*  binary
*_lf_*    binary

so that git will then know to not auto convert the CRLFs in the input to just LFs

[spytheman]

#23629 it could be same problem

It could be, although I think that it is playground specific.
If I remember correctly it had to do with how the JS code for the frontend there treated the server responses, but I could be wrong.

[spytheman]

hm, sorry; I will add the test, since it mostly works locally

[Krchi]

hm, sorry; I will add the test, since it mostly works locally

You are right, this test case is hard for me

[spytheman]

It was indeed tricky to add, since I also had a git hook to always run vfmt on the changed .vv files :-) too; I had to git commit --no-verify to avoid it explicitly...

[spytheman]

Excellent work!