Implement "show" menu to list various internal configs as a nicely paged menu

[pdmef]

Running ':attachments ?' in mutt shows current attachment settings on stdout instead of inside mutt... which is ugly.

The attached patch implements a "show" menu with a few "demo" views to show what this can be used for:

• show attachments: Replacement for "attachments ?" (latter kept for compatibility)
• show config [regex]: Show all config options matching regex (if omitted, regex defaults to ".", i.e. all)
• show mailboxes: Show all known mailboxes in order they were defined
• show spam: Show all currently configures spam recognition commands

Except "config" these don't seem to be extremely useful. However, what comes to mind and why I took the prototype this far is to mostly prepare the code to be ready to implement this for hooks. For example, 'show folder-hook [folder-regex]' would be nice to have to know what folder-hooks mutt would execute in what order.

[pdmef]

patch-1.5.17hg.pdmef.showmenu.1

[pdmef]

patch-1.5.17hg.pdmef.showmenu.1

[naveen]

Sounds really useful. Should I apply p1.2 or p1 to use this patch?

[Rocco Rutte]

Hi,

* Mutt wrote:

> Sounds really useful. Should I apply p1.2 or p1 to use this patch?

That was my fault when I attached them, they're identical.

Rocco

[pdmef]

See also http://www.momonga-linux.org/~tamo/patch-1.5.9.tamo.comval.7