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Description of problem:

Trying to implement fix for BZ 1457191, I found that when using the "-k <plugin>.<option>=<value>" command line option, and trying to specify a comma-separated list of values in the <value> field, the resulting value of a call to get_option_as_list(<option>) was only the first item of the list.

This is due to the list splitting automatically occurring during option parsing (OptionParserExtended class and "extend" keyword).
This "extend" feature is used for "-k".
Due to the splitting, only the first value of the list gets returned.

Version-Release number of selected component (if applicable):

sos-3.3-5.el7_3

How reproducible:

Always with attached reproducer (dummy.py plugin)

Steps to Reproduce:
1. Install reproducer in /usr/lib/python2.7/site-packages/sos/plugins/
2. Run:
    sosreport -o dummy --no-report --batch -k dummy.mylist="item1,item2" | grep dummy

Actual results:

# sosreport -o dummy --no-report --batch -k dummy.mylist="item1,item2" | grep dummy
unable to set option for disabled or non-existing plugin (item2)
[plugin:dummy] Item: item1
  Running 1/1: dummy...   

Expected results:

1. no error ("unable to set option ...")
2. 2 items displayed ("item1" and "item2")

Additional info:

Created attachment 1283687 [details]
Reproducer

Since no plugins in the RHEL package actually try to do this (it's a well known limitation - the commas are treated as separators between arguments to separate plugins, rather than as embedded in argument values), it is better to file issues like this upstream where we can understand what you're trying to achieve and work out a solution:

  https://github.com/sosreport/sos/issues

Sorry, just created issue on GitHub: https://github.com/sosreport/sos/issues/1023

Re-scheduling to potential inclusion in RHEL 7.6. No plans to fix it in upcoming 7.5 until someone has a good idea how to resolve it (see upstream discussion).

no plans to fix it in 7.6, deferring to 7.7

This won't be fixed in RHEL7 that is already in maintenance phase.

Re-scheduling to RHEL8 where I hope we will resolve the brain-teaser behind this BZ.

After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.