I just attempted to modify a couple of files in stm32-sine and it seems my text editor is very confused by the format of the file.
1) There seems to be a mixture of Windows (\r\n) and UNIX (\n) line endings, even within the same file.
2) There are some non-ASCII characters, for example in people's names in copyright messages, and the mu in microseconds in comments but there are not UTF-8.
I will try to create a pull request to standardize line endings to UNIX and if possible I will convert all everything to UTF-8, unless there is some other file format people prefer?