[PATCH v1 2/4] git gui: cope with duplicates in _get_recentrepo

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_get_recentrepo will fail if duplicate invalid entries are present
in the recentrepo config list. The previous commit fixed the
'git config' limitations in _unset_recentrepo by unsetting all config
entries, however this code would fail on the second attempt to unset it.

Refactor the code to pre-sort and de-duplicate the recentrepo list to
avoid a potential second unset attempt.

Signed-off-by: Philip Oakley <philipoakley@xxxxxxx>
---
 git-gui/lib/choose_repository.tcl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/git-gui/lib/choose_repository.tcl b/git-gui/lib/choose_repository.tcl
index 133ca0a..aa87bcc 100644
--- a/git-gui/lib/choose_repository.tcl
+++ b/git-gui/lib/choose_repository.tcl
@@ -235,14 +235,14 @@ method _invoke_next {} {
 
 proc _get_recentrepos {} {
 	set recent [list]
-	foreach p [get_config gui.recentrepo] {
+	foreach p [lsort -unique [get_config gui.recentrepo]] {
 		if {[_is_git [file join $p .git]]} {
 			lappend recent $p
 		} else {
 			_unset_recentrepo $p
 		}
 	}
-	return [lsort $recent]
+	return $recent
 }
 
 proc _unset_recentrepo {p} {
-- 
2.5.2.windows.2

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