+proc checkout_index {msg pathList after} {
+ global update_index_cp ui_status_value
+
+ if {![lock_index update]} return
+
+ set update_index_cp 0
+ set pathList [lsort $pathList]
+ set totalCnt [llength $pathList]
+ set batch [expr {int($totalCnt * .01) + 1}]
+ if {$batch > 25} {set batch 25}
+
+ set ui_status_value [format \
+ "$msg... %i/%i files (%.2f%%)" \
+ $update_index_cp \
+ $totalCnt \
+ 0.0]
+ set cmd [list git checkout-index]
+ lappend cmd --index
+ lappend cmd --quiet
+ lappend cmd --force
+ lappend cmd -z
+ lappend cmd --stdin
+ set fd [open "| $cmd " w]
+ fconfigure $fd \
+ -blocking 0 \
+ -buffering full \
+ -buffersize 512 \
+ -translation binary
+ fileevent $fd writable [list \
+ write_checkout_index \
+ $fd \
+ $pathList \
+ $totalCnt \
+ $batch \
+ $msg \
+ $after \
+ ]
+}
+
+proc write_checkout_index {fd pathList totalCnt batch msg after} {
+ global update_index_cp ui_status_value
+ global file_states current_diff
+
+ if {$update_index_cp >= $totalCnt} {
+ close $fd
+ unlock_index
+ uplevel #0 $after
+ return
+ }
+
+ for {set i $batch} \
+ {$update_index_cp < $totalCnt && $i > 0} \
+ {incr i -1} {
+ set path [lindex $pathList $update_index_cp]
+ incr update_index_cp
+
+ switch -glob -- [lindex $file_states($path) 0] {
+ AM -
+ AD {set new A_}
+ MM -
+ MD {set new M_}
+ _M -
+ _D {set new __}
+ ?? {continue}
+ }
+
+ puts -nonewline $fd $path
+ puts -nonewline $fd "\0"
+ display_file $path $new
+ }
+
+ set ui_status_value [format \
+ "$msg... %i/%i files (%.2f%%)" \
+ $update_index_cp \
+ $totalCnt \
+ [expr {100.0 * $update_index_cp / $totalCnt}]]
+}
+