Feature Request: Build with --enable-block-select

XTerm 397 added support for selecting a rectangular block of text (https://invisible-island.net/xterm/xterm.log.html#xterm_397).

I have tested the patch and found no problems. Though it is a little crude, it is a welcome feature.

This is already included, all we need is to enable the build flag as I have done in here with --enable-block-select.

PKGBUILD

@@ -46,6 +46,7 @@ build() {
       --enable-exec-xterm \
       --enable-sixel-graphics \
       --enable-regis-graphics \
+      --enable-block-select \
       --with-tty-group=tty \
       --with-utempter
   make