+ incr pi -1
+ if {$currentid eq $nullid} {
+ if {$pi > 0} {
+ # must be a merge in progress...
+ if {[catch {
+ # get the last line from .git/MERGE_HEAD
+ set f [open [file join $gitdir MERGE_HEAD] r]
+ set id [lindex [split [read $f] "\n"] end-1]
+ close $f
+ } err]} {
+ error_popup [mc "Couldn't read merge head: %s" $err]
+ return
+ }
+ } elseif {$parents($curview,$currentid) eq $nullid2} {
+ # need to do the blame from the index
+ if {[catch {
+ set from_index [index_sha1 $flist_menu_file]
+ } err]} {
+ error_popup [mc "Error reading index: %s" $err]
+ return
+ }
+ }
+ } else {
+ set id [lindex $parents($curview,$currentid) $pi]
+ }