+#!/bin/sh
+# Tcl ignores the next line -*- tcl -*- \
+exec wish "$0" -- "$@"
+
+# This is a trivial implementation of an SSH_ASKPASS handler.
+# Git-gui uses this script if none are already configured.
+
+set answer {}
+set yesno 0
+set rc 255
+
+if {$argc < 1} {
+ set prompt "Enter your OpenSSH passphrase:"
+} else {
+ set prompt [join $argv " "]
+ if {[regexp -nocase {\(yes\/no\)\?\s*$} $prompt]} {
+ set yesno 1
+ }
+}
+
+message .m -text $prompt -justify center -aspect 4000
+pack .m -side top -fill x -padx 20 -pady 20 -expand 1
+
+entry .e -textvariable answer -width 50
+pack .e -side top -fill x -padx 10 -pady 10
+
+if {!$yesno} {
+ .e configure -show "*"
+}
+
+frame .b
+button .b.ok -text OK -command finish
+button .b.cancel -text Cancel -command {destroy .}
+
+pack .b.ok -side left -expand 1
+pack .b.cancel -side right -expand 1
+pack .b -side bottom -fill x -padx 10 -pady 10
+
+bind . <Visibility> {focus -force .e}
+bind . <Key-Return> finish
+bind . <Key-Escape> {destroy .}
+bind . <Destroy> {exit $rc}
+
+proc finish {} {
+ if {$::yesno} {
+ if {$::answer ne "yes" && $::answer ne "no"} {
+ tk_messageBox -icon error -title "Error" -type ok \
+ -message "Only 'yes' or 'no' input allowed."
+ return
+ }
+ }
+
+ set ::rc 0
+ puts $::answer
+ destroy .
+}
+
+wm title . "OpenSSH"
+tk::PlaceWindow .