New remove option : -u / --unneeded (FS#6505).

With --unneeded option 'pacman -R' doesn't stop in case of dependency error;
it removes the needed-dependency targets from the target-list instead.  See
also: http://archlinux.org/pipermail/pacman-dev/2007-October/009653.html .

The patch also adds a new causingpkg field to pmdepmissing_t which indicates
the to-be-removed package which would cause a dependency break. This is
needed, because miss->depend.name may be a provision. miss->causingpkg will
be useful in -R dependency error messages too.

[Xavier: renamed inducer to causingpkg, removed the _alpm_pkgname_pkg_cmp
helper function as requested by Aaron. This might be added by a further
commit.  Other small cleanups, updated manpage and bash completion.]

Signed-off-by: Chantry Xavier <shiningxc@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/contrib/bash_completion b/contrib/bash_completion
index bb30ffd0..7f5d1b08 100644
--- a/contrib/bash_completion
+++ b/contrib/bash_completion
@@ -187,6 +187,7 @@ _pacman ()
           dbonly) mod="${mod}k" ;;
           nosave) mod="${mod}n" ;;
           recursive) mod="${mod}s" ;;
+          unneeded) mod="${mod}u" ;;
         esac ;;
       *) toparse="${a}" ;;
     esac
@@ -243,6 +244,7 @@ _pacman ()
           -k --dbonly \
           -n --nosave \
           -s --recursive \
+          -u --unneeded \
           --config \
           --logfile \
           --noconfirm \