[Octave-bug-tracker] [bug #31946] pkg: better error reporting when trying to remove system packages

[Nicholas Jankowski]

Follow-up Comment #11, bug #31946 (project octave):

bug still present in octave 6.3.0

on a clean windows install, doing attempting a 'local' uninstall of a  bundled
'global' package:


>> pkg list video
Package Name  | Version | Installation directory
--------------+---------+-----------------------
       video  |   2.0.0 | ...\mingw64\share\octave\packages\video-2.0.0

>> pkg uninstall video
warning: some of the packages you want to uninstall are not installed
warning: called from
    uninstall at line 72 column 7
    pkg at line 582 column 7

warning: no packages will be uninstalled
warning: called from
    uninstall at line 77 column 5
    pkg at line 582 column 7


the 'fourth.patch' patch no longer applies cleanly to default, but only
because i think the 4th blob doesn't do anything.

looking at this, there are a few things still hanging - 'no package of that
name installed' doesn't work when multiple packages are called. it should echo
the named package(s) that aren't there. 

and some of the language should be updated - referring to system packages as
global and user packages as local.  i'll try to work up a modified patch to
address these.  

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