[Bash-completion-devel] Bug#640217: bash-completion: complete package versions with apt-get install

[Jerome Reybert]

Package: bash-completion
Version: 1:1.3-1
Severity: wishlist
Tags: patch

apt-get provides a way to install a given package version:
 $ apt-get install package=version

But bash-completion does not handle the completion for these versions. So, if
you do not know the exact version string of your package, you must search it
through apt-cache policy or apt-cache showpkg in a first time.

This patch provides the following behaviour:
 $ apt-get install package=<tab>
will propose the existing versions for package.

It currently relies on apt-cache showpkg syntax, which is quite verbose. Maybe
it would be safer to rely on apt-cache policy, or if you know any other way to
get neat list of package versions.

Jérôme



-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (750, 'testing'), (700, 'stable'), (600, 'unstable'), (550, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.0.0-1-686-pae (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages bash-completion depends on:
ii  bash                          4.1-3      The GNU Bourne Again SHell

bash-completion recommends no packages.

bash-completion suggests no packages.

-- no debconf information
-------------- next part --------------
--- completions/apt	2011-01-21 10:36:11.000000000 +0100
+++ apt.new	2011-08-31 12:47:37.000000000 +0200
@@ -32,6 +32,17 @@
                     command grep "^Source: $cur" | sort -u | cut -f2 -d" " ) )
                 return 0
                 ;;
+            install)
+                
+                if [[ $cur =~ =$  ]]; then 
+# assume that versions of package are between "Versions:" and "Reverse Depends:" strings in apt-cache showpkg
+                  COMPREPLY=( $( apt-cache --no-generate showpkg $prev | awk '/^Versions/ {versions=1}; /^Reverse\ Depends/ {versions=0}; { if (versions == 1 && $1 $1 ~ /^[0-9]/ )  print $1 } ' ) )
+                else
+                  COMPREPLY=( $( apt-cache --no-generate pkgnames "$cur" \
+                    2> /dev/null ) )
+                fi
+                return 0
+                ;;
             *)
                 COMPREPLY=( $( apt-cache --no-generate pkgnames "$cur" \
                     2> /dev/null ) )