Arch Linux

Description:

File v5.40 displays incorrect an incorrect mime type for xz compressed files.
This causes a problem with makepkg not being able to decrompress plain xz compressed source-files.
See: https://bbs.archlinux.org/viewtopic.php?id=265115

Additional info:
* package version(s)
file 5.40-1

Steps to reproduce:

$ file -v
file-5.40
magic file from /usr/share/file/misc/magic
seccomp support included
$ echo "test" | xz - >test.xz
$ file -b test.xz
XZ compressed data, checksum CRC64
$ file -bi test.xz
application/octet-stream; charset=binary

Correct output with version 5.39:
$ file -v
file-5.39
magic file from /usr/share/file/misc/magic
seccomp support included
$ echo "test" | xz - >test.xz
$ file -b test.xz
XZ compressed data
$ file -bi test.xz
application/x-xz; charset=binary

Attached is a patch that seems to fix it, the output seems to be correct:
$ ./src/file -v -m magic/magic.mgc
lt-file-5.40
... (compiled from git tag FILE5_40 with my patch)
$ ./src/file -S -bizL -m magic/magic.mgc test.xz
text/plain; charset=us-ascii compressed-encoding=application/x-xz; charset=binary
$ ./src/file -S -bzL -m magic/magic.mgc test.xz
ASCII text (XZ compressed data, checksum CRC64)