Bug#741453: libconfig-model-dpkg-perl: Feature wish: subcommand to add/remove elements to control fields, e.g. Uploaders

[Dominique Dumont]

On Wednesday 12 March 2014 18:12:05 you wrote:
> Does not work. It always seems to remove the first entry of Uploaders.
> My fault. I missed the warning 'Argument "John Doe <user at example.org>"
> isn't numeric in splice at /usr/share/perl5/Config/Model/ListId.pm
> line 317.'

Yup. I should raise an error in this case.

> So the feature request is even more grounded on needs than before. 

ok. I'm thinking about adding more instructions to tinker with list element
with Config::Model::Loader [1]. These new instructions would be directly 
usable with 'cme modify'.

Here's what I'm thinking about:

* Replace xxx~yy with xxx:-yy (Delete item referenced by C<xxx> element and id   
  C<yy>).
 
* xxx-=yy :Remove the element whose value is C<yy>. For list or hash 

* xxx-~/yy/: Remove the element whose value matches C<yy>. For list or hash 

* xxx:<yy :Push C<yy> value on C<xxx> list (maybe provide also xxx.push(yy))

* xxx:>yy :Unshift C<yy> value on C<xxx> list (maybe provide also 
  xxx.unshift(yy))

* xxx:@ : Sort the list (maybe provide also xxx.sort)

* xxx:yy<zz or xxx.insert_at(yy,zz) : Insert C<zz> value on C<xxx> 
  list before B<index> C<yy>.

* xxx:~yy<zz or xxx.insert_before(/yy/,zz) :Insert C<zz> value on 
  C<xxx> list before B<value> matching C<yy>.

* xxx:=yy<zz or xxx.insert_before(yy,zz) : Insert C<zz> value on 
  C<xxx> list before B<value> C<yy>.

The short syntax is less typing, but can be difficult to remember. I wonder 
which syntax I should support...

Thoughts ?


[1] http://search.cpan.org/dist/Config-Model/lib/Config/Model/Loader.pm
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