allow query only in a give product and allow the user to change the distro

Example usage of the implementation in my bughelper.text.dev branch rev 224:

markus@thekorn:/home/devel/bughelper/text.dev$ python -W ignore bugnumbers -p "inkscape" --importance CriticalUSING THIS URL, https://bugs.launchpad.net/ubuntu/+source/inkscape/+bugs?field.importance%3Alist=Critical
No bugs found.
markus@thekorn:/home/devel/bughelper/text.dev$ python -W ignore bugnumbers -P "inkscape" --importance Critical
USING THIS URL, https://bugs.launchpad.net/inkscape/+bugs?field.importance%3Alist=Critical
[Bug 169103 inkscape: Confirmed/Critical] - tooltip for menubar not localized
[Bug 168301 inkscape: Fix Committed/Critical] - Main window disabled if a modal dialog sinks
[Bug 179640 inkscape: Incomplete/Critical] - Fill with color leads to a crash
[Bug 168586 inkscape: Confirmed/Critical] - Crash related with ungrouping
[Bug 180890 inkscape: Confirmed/Critical] - work around deficiencies of feBlend-based blend modes
[Bug 177783 inkscape: Triaged/Critical] - cairo-ps export creates empty ps files on win32
[Bug 179326 inkscape: Confirmed/Critical] - openclipart import fails when descriptions contain entities
[Bug 169791 inkscape: In Progress/Critical] - application icon following the tango style guidelines
[Bug 179452 inkscape: Incomplete/Critical] - export to openclipart.org in dev version
markus@thekorn:/home/devel/bughelper/text.dev$ python -W ignore bugnumbers -p bughelper
USING THIS URL, https://bugs.launchpad.net/ubuntu/+source/bughelper/+bugs
[Bug 154024 bughelper: Fix Committed/Medium] - bughelper could crash if a bugreport changes during a run
[Bug 129341 bughelper: New/Wishlist] - bughelper would benefit from the ability to inherit clues from a clue file not named after a package
[Bug 88102 bughelper: Confirmed/Undecided] - sort report by issue type rather than bug number
[Bug 150887 bughelper: In Progress/Wishlist] - RFE: add 'atom'-feed output format
markus@thekorn:/home/devel/bughelper/text.dev$ python -W ignore bugnumbers -p bughelper -D suse
USING THIS URL, https://bugs.launchpad.net/suse/+source/bughelper/+bugs
No bugs found.
markus@thekorn:/home/devel/bughelper/text.dev$ python -W ignore bugnumbers -P bughelper
USING THIS URL, https://bugs.launchpad.net/bughelper/+bugs
[Bug 181209 bughelper: Fix Committed/Undecided] - RFE: Ignore warnings in text-mode
[Bug 109547 bughelper: Confirmed/Wishlist] - support to sort out matched clues to multiple files per package (e.g. one file per task)
[Bug 110937 bughelper: Confirmed/Wishlist] - show status updates during long bughelper runs
[Bug 181153 bughelper: Incomplete/Undecided] - [text-branch] "Style 'bugnumbers.wiki' not found"
[Bug 88521 bughelper: Confirmed/Wishlist] - selectively pulling attachments by name
[Bug 81291 bughelper: Confirmed/Wishlist] - RFE: Web interface to bughelper
[Bug 181064 bughelper: Fix Committed/Undecided] - buginfo reports "No cookie-file found"
[Bug 88102 bughelper: Confirmed/Medium] - sort report by issue type rather than bug number
[Bug 181149 bughelper: Fix Committed/Undecided] - [text-branch] ValueError: list.index(x): x not in list
[Bug 109628 bughelper: Confirmed/Wishlist] - allow clues to match "duplicate count > X"; e.g. to list top-crashers
[...

This is looking good, thanks for implementing it.

This is merged in the main branch and is available in the Hardy package of bughelper.