cannot parse /etc/fstab with trailing "," in the fs_mntops field

[rwmjones]

$ mkdir -p root/etc
$ echo '/dev/mapper/foo-bar / xfs defaults, 0 0' > root/etc/fstab
$ cat root/etc/fstab
/dev/mapper/foo-bar / xfs defaults, 0 0

Note extra "," in the fourth field. Apparently the tools which normally parse fstab are fine with that.

$ augtool -r $PWD/root
augtool> get /augeas/files/etc/fstab/error/message
/augeas/files/etc/fstab/error/message = Iterated lens matched less than it should
augtool> get /augeas/files/etc/fstab/error/line
/augeas/files/etc/fstab/error/line = 1
augtool> get /augeas/files/etc/fstab/error/char
/augeas/files/etc/fstab/error/char = 34

Augeas fails to parse the file at the extra "," character.

[igalic]

can you provide a PR with a fix?
or at least one with a failing test?

[rwmjones]

I will try to at some point, although I'm pretty busy at the moment. The first comment does contain a test case which should be reproducible anywhere if you're just interested in seeing the failure.