Patch proposal for PR 19678

[François-Xavier Coudert]

> Would it also be worth fixing mac line-endings (just '\r') at the same time?

I was scared someone would eventually say this. The thing is: I don't know 
which platforms still use '\r'. I guess MacOSX now uses Unix-style 
line-endings, doesn't it?

It's gonna be much more difficult to treat '\r' than to add '\r\n' support, 
since everytime we see a '\r', we wouldn't know if it is the end of a line 
or if we need waiting for the following '\n'. Since nobody has asked for 
that yet (and we're not yet using gfortran on old MacOS), I would be for 
keeping it simple right now.

FX