[StyledEdit] Can't open some styled text files

[mpanasyuk]

Some styled text files can't be opened in Haiku StyledEdit - alert with 'Unsupported format' message.

But those same files can be opened with R5 StyledEdit on the same Haiku installation using same Haiku Translator.

See example.

Revision 32975

[mpanasyuk]

Example of styled text file

[axeld]

The attached file is, despite of its suffix, indeed no text file.

[mmlr]

The file is basically a text file, but it contains 0 bytes at the end of each line. This technically makes it a non-text file, but most editors handle this case gracefully by stripping them or replacing them with placeholder characters. Just mentioning it, I don't know if it is a good thing to do this. The problem with replacing those characters with something else is that if you open such a file and then safe it again it will pretty much destroy the original data.