merge(3p/git): Merge git subtree at v2.29.2 r/1890

This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb

1 files changed, 9 insertions, 5 deletions

diff --git a/third_party/git/git-gui/lib/merge.tcl b/third_party/git/git-gui/lib/merge.tcl
index 9f253db5b3..664803cf3f 100644
--- a/third_party/git/git-gui/lib/merge.tcl
+++ b/third_party/git/git-gui/lib/merge.tcl
@@ -241,23 +241,27 @@ Continue with resetting the current changes?"]
 	if {[ask_popup $op_question] eq {yes}} {
 		set fd [git_read --stderr read-tree --reset -u -v HEAD]
 		fconfigure $fd -blocking 0 -translation binary
-		fileevent $fd readable [namespace code [list _reset_wait $fd]]
-		$::main_status start [mc "Aborting"] [mc "files reset"]
+		set status_bar_operation [$::main_status \
+			start \
+			[mc "Aborting"] \
+			[mc "files reset"]]
+		fileevent $fd readable [namespace code [list \
+			_reset_wait $fd $status_bar_operation]]
 	} else {
 		unlock_index
 	}
 }
 
-proc _reset_wait {fd} {
+proc _reset_wait {fd status_bar_operation} {
 	global ui_comm
 
-	$::main_status update_meter [read $fd]
+	$status_bar_operation update_meter [read $fd]
 
 	fconfigure $fd -blocking 1
 	if {[eof $fd]} {
 		set fail [catch {close $fd} err]
-		$::main_status stop
 		unlock_index
+		$status_bar_operation stop
 
 		$ui_comm delete 0.0 end
 		$ui_comm edit modified false