patch 9.0.0887: cannot easily try out what codes various keys produce
Problem: Cannot easily try out what codes various keys produce.
Solution: Add a script to gather key code information, with an initial list
of codes to compare with.
diff --git a/src/testdir/keycode_check.json b/src/testdir/keycode_check.json
new file mode 100644
index 0000000..6460255
--- /dev/null
+++ b/src/testdir/keycode_check.json
@@ -0,0 +1 @@
+{"xterm":{"Space":"20","C-Tab":"09","A-Esc":"20","C-Space":"","S-C-I":"09","C-I":"09","S-Tab":"1b5b5a","Tab":"09","S-Space":"20","A-Tab":"20","C-Esc":"1b","protocol":"none","A-Space":"20","S-Esc":"1b","Esc":"1b"},"kitty":{"Space":"20","C-Tab":"20","A-Esc":"1b5b4f","C-Space":"1b5b33323b3575","S-C-I":"1b5b3130353b3675","C-I":"1b5b3130353b3575","S-Tab":"1b5b393b3275","Tab":"09","S-Space":"20","A-Tab":"1b5b4f","C-Esc":"1b5b32373b3575","protocol":"kitty","A-Space":"20","S-Esc":"1b5b32373b3275","Esc":"1b5b323775"},"xterm2":{"Space":"20","C-Tab":"1b5b32373b353b397e","A-Esc":"20","C-Space":"1b5b32373b353b33327e","S-C-I":"1b5b32373b363b37337e","C-I":"1b5b32373b353b3130357e","S-Tab":"1b5b5a","Tab":"09","S-Space":"1b5b32373b323b33327e","A-Tab":"20","C-Esc":"1b5b32373b353b32377e","protocol":"mok2","A-Space":"20","S-Esc":"1b","Esc":"1b"}}