#1317 Command line extraction exit code false negative

[Jeremy Long]

An operation resulting in a successful extraction, even when a minor error is present, should return an exit code of WARNING (1), not a FATAL ERROR (2). Otherwise, it is not possible for the caller to know whether the operation completed successfully despite the error/warning.

For example, incorrectly give a .tar file a .bz2 extension, then extract it via the command line (without specifying the type). 7zG successfully detects that the file is a .tar file, gives a warning message that it could not open the file as a .bz2 file, then successfully extracts the files from the archive. The return value, however, is "2", the same as if the file was corrupt and unextractable.

[Igor Pavlov]

That code is complicated.
Probably later I'll try to look it.