simplevars fails when adding a blank value to a parameter then saving.

[mwoodson]

I am using the augeas lens with the commit id of:
93c8387

In the simplevars lens, it expects the format of:

PARAM = VALUE

I am able to add a new PARAM (PARAM did NOT exist before adding it) with a blank VALUE ("", empty string) and see it with a print statement. However, when I do a save, I get errors.

Here is an example of my workflow:

augtool> print /files/home/mwoodson/tmp/console.conf/
...
/files/home/mwoodson/tmp/console.conf/PARAM = VALUE1

(^^existing values shown)

augtool> set /files/home/mwoodson/tmp/console.conf/MATT_NEW_VALUE ""
augtool> print /files/home/mwoodson/tmp/console.conf/
...
/files/home/mwoodson/tmp/console.conf/PARAM = VALUE1
/files/home/mwoodson/tmp/console.conf/MATT_NEW_VALUE = ""

(^^new value added)


augtool> save
error: Failed to execute command
saving failed (run 'print /augeas//error' for details)

(^^save failed)

augtool> print /augeas//error
/augeas/files/home/mwoodson/tmp/console.conf/error = "put_failed"
/augeas/files/home/mwoodson/tmp/console.conf/error/path = "/files/home/mwoodson/tmp/console.conf/MATT_NEW_VALUE"
/augeas/files/home/mwoodson/tmp/console.conf/error/lens = "/usr/share/augeas/lenses/dist/simplevars.aug:31.40-.59:"
/augeas/files/home/mwoodson/tmp/console.conf/error/message = "Value '' does not match regexp /(('[^\\n']*')|(\"[^\\n\"]*\"))|([^\\n \\t'\"#][^\\n#]*[^\\n \\t#]|[^\\n \\t'\"#])/ in store lens"
augtool>

[iamkrish10]

Hi,
Any update on this issue?

Thanks.
Krish

[raphink]

I've started having a look. Unfortunately, fixing this is far from trivial and I haven't yet found a proper way to do it.

I have a functioning (failing) test though:

(* Test: Simplevars.lns
     Add variable with empty value (GH #148) *)
test Simplevars.lns put ""
       after set "/A" "" = "A =\n"