Problem: Fileformat test fails on MS-Windows.
Solution: Set fileformat of buffer.
50434bd74c
Cherry-pick Test_fileformat_plusplus_read() from patch v8.2.0261.
Problem: Crash when 'fileformat' is forced to "dos" and the first line in
the file is empty and does not have a CR character.
Solution: Don't check for CR before the start of the buffer.
2aa5f696b9
Problem: The test for patch 8.0.0224 misses the CR characters and passes
even without the fix. (Christian Brabandt)
Solution: Use double quotes and \<CR>.
1695f99d08
Problem: When 'fileformats' is changed in a BufReadPre auto command, it
does not take effect in readfile(). (Gary Johnson)
Solution: Check the value of 'fileformats' after executing auto commands.
(Christian Brabandt)
7a2699e868
