init commitHEADmaster

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diff --git a/autoload/windowing/screen.kak b/autoload/windowing/screen.kak
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+++ b/autoload/windowing/screen.kak
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+# http://gnu.org/software/screen/
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+
+provide-module screen %{
+
+# ensure that we're running under screen
+evaluate-commands %sh{
+    [ -z "${kak_opt_windowing_modules}" ] || [ -n "$STY" ] || echo 'fail screen not detected'
+}
+
+define-command screen-terminal-impl -hidden -params 3.. %{
+    nop %sh{
+        tty="$(ps -o tty ${kak_client_pid} | tail -n 1)"
+        screen -X eval "$1" "$2"
+        shift 2
+        # see x11.kak for what this achieves
+        args=$(
+            for i in "$@"; do
+                printf "'%s' " "$(printf %s "$i" | sed "s|'|'\\\\''|g")"
+            done
+        )
+        screen -X screen sh -c "${args} ; screen -X remove" < "/dev/$tty"
+    }
+}
+
+define-command screen-terminal-vertical -params 1.. -docstring '
+screen-terminal-vertical <program> [<arguments>]: create a new terminal as a screen pane
+The current pane is split into two, left and right
+The program passed as argument will be executed in the new terminal' \
+%{
+    screen-terminal-impl 'split -v' 'focus right' %arg{@}
+}
+complete-command screen-terminal-vertical shell
+
+define-command screen-terminal-horizontal -params 1.. -docstring '
+screen-terminal-horizontal <program> [<arguments>]: create a new terminal as a screen pane
+The current pane is split into two, top and bottom
+The program passed as argument will be executed in the new terminal' \
+%{
+    screen-terminal-impl 'split -h' 'focus down' %arg{@}
+}
+complete-command screen-terminal-horizontal shell
+
+define-command screen-terminal-window -params 1.. -docstring '
+screen-terminal-window <program> [<arguments>]: create a new terminal as a screen window
+The program passed as argument will be executed in the new terminal' \
+%{
+    nop %sh{
+        tty="$(ps -o tty ${kak_client_pid} | tail -n 1)"
+        screen -X screen "$@" < "/dev/$tty"
+    }
+}
+complete-command screen-terminal-window shell
+
+define-command screen-focus -params ..1 -docstring '
+screen-focus [<client>]: focus the given client
+If no client is passed then the current one is used' \
+%{
+    evaluate-commands %sh{
+        if [ $# -eq 1 ]; then
+            printf %s\\n "
+                evaluate-commands -client '$1' focus
+                "
+        elif [ -n "${kak_client_env_STY}" ]; then
+            tty="$(ps -o tty ${kak_client_pid} | tail -n 1)"
+            screen -X select "${kak_client_env_WINDOW}" < "/dev/$tty"
+        fi
+    }
+}
+complete-command -menu screen-focus client 
+
+alias global focus screen-focus
+
+}