Bug#476075: closed by Osamu Aoki <osamu@debian.org> (apt-get removes as instructed. Not a bug)

[Eugen Dedu <Eugen.Dedu@pu-pm.univ-fcomte.fr>]

Hi,

Thanks for your answer.

Osamu Aoki wrote:
> Hi,
>
> I do not see the need for your suggestion.
>
> I think you problem are 
>  * POSIX regular expression need to be studied.
>  * you are complainig auto remove.  
>
> > Finally, in fact, I do not understand the algorithm.  For ex., when I  
> > execute apt-get -s remove ^openof.*, why aspell is removed, but  
> > ttf-opensymbol not?  I have both on my system.
>
> ^ means "string start with" thus ttf-opensymbol is not met.
> * means 0 or more repeat
> So you are essentially matching name starting with "opn"
>
> aspell must have been installed by dependency.  If you ignore warning,
> that is your fault.
> > What does it mean "identical to install except that packages are  
> > removed"?  I know that installing means "install them and all their  
> > currently uninstalled dependencies, recursively".  Does remove means  
> > "remove them and all its dependencies, and recursively all the  
> > dependencies of dependencies"?

I think I understand: remove removes all the packages X matching pattern 
and all the packages installed on that system DURING THE INSTALLATION of 
X because X depended on them, is this right?

This means that apt-get install memorises each time what packages are 
installed by dependency for what package, is this right?

Where in the man page is this explained?

> When ever you issue command from root with regrex or glob, you must be
> very careful.  Matching 3 letters to do remove is bad move.

Do you think that showing the packages to be removed and adding a 
confirmation before remove is a good idea?

Cheers,
Eugen Dedu