+proc do_reset_hard {} {
+ global HEAD commit_type file_states
+
+ if {[string match amend* $commit_type]} {
+ info_popup {Cannot abort while amending.
+
+You must finish amending this commit.
+}
+ return
+ }
+
+ if {![lock_index abort]} return
+
+ if {[string match *merge* $commit_type]} {
+ set op merge
+ } else {
+ set op commit
+ }
+
+ if {[ask_popup "Abort $op?
+
+Aborting the current $op will cause
+*ALL* uncommitted changes to be lost.
+
+Continue with aborting the current $op?"] eq {yes}} {
+ set fd [open "| git read-tree --reset -u HEAD" r]
+ fconfigure $fd -blocking 0 -translation binary
+ fileevent $fd readable [list reset_hard_wait $fd]
+ set ui_status_value {Aborting... please wait...}
+ } else {
+ unlock_index
+ }
+}
+
+proc reset_hard_wait {fd} {
+ global ui_comm
+
+ read $fd
+ if {[eof $fd]} {
+ close $fd
+ unlock_index
+
+ $ui_comm delete 0.0 end
+ $ui_comm edit modified false
+
+ catch {file delete [gitdir MERGE_HEAD]}
+ catch {file delete [gitdir rr-cache MERGE_RR]}
+ catch {file delete [gitdir SQUASH_MSG]}
+ catch {file delete [gitdir MERGE_MSG]}
+ catch {file delete [gitdir GITGUI_MSG]}
+
+ rescan {set ui_status_value {Abort completed. Ready.}}
+ }
+}
+