Bug#768069: apt command line package name interpretation

["Jonathan David Amery" <jdamery@ysolde.ucam.org>]

Julian Andres Klode writes:
> The only time an issue can appear is if you have two or more packages
> ending in + or - where one is a prefix of the other. As long as we
> do not have such packages in the archive, there is no issue.
> 
 I had a quick look in my (not complete) mirror and didn't see any
packages with a terminal -; however there are a number of packages with
terminal + or ++ that also have packages whose names are a prefix:

aewm       aewm++
bison      bison++
freefem    freefem++
gobjc      gobjc++
kimwitu    kimwitu++
libdb4.6   libdb4.6++
libdb4.7   libdb4.7++
libdb4.8   libdb4.8++
libdb5.1   libdb5.1++
libdb5.3   libdb5.3++
memtest86  memtest86+
minisat    minisat+
paw        paw++
python-py  python-py++
swish      swish++
vera       vera++
wmweather  wmweather+
xgalaga    xgalaga++

 In addition if there was no python-py++ package then that string
supplied to apt would match 290 packages in my mirror.

 J.