patch 8.2.3666: libvterm is outdated
Problem: Libvterm is outdated.
Solution: Include patches from revision 769 to revision 789.
diff --git a/src/libvterm/t/40state_selection.test b/src/libvterm/t/40state_selection.test
new file mode 100644
index 0000000..6ed8972
--- /dev/null
+++ b/src/libvterm/t/40state_selection.test
@@ -0,0 +1,55 @@
+INIT
+UTF8 1
+WANTSTATE
+
+!Set clipboard; final chunk len 4
+PUSH "\e]52;c;SGVsbG8s\e\\"
+ selection-set mask=0001 ["Hello,"]
+
+!Set clipboard; final chunk len 3
+PUSH "\e]52;c;SGVsbG8sIHc=\e\\"
+ selection-set mask=0001 ["Hello, w"]
+
+!Set clipboard; final chunk len 2
+PUSH "\e]52;c;SGVsbG8sIHdvcmxkCg==\e\\"
+ selection-set mask=0001 ["Hello, world\n"]
+
+!Set clipboard; split between chunks
+PUSH "\e]52;c;SGVs"
+ selection-set mask=0001 ["Hel"
+PUSH "bG8s\e\\"
+ selection-set mask=0001 "lo,"]
+
+!Set clipboard; split within chunk
+PUSH "\e]52;c;SGVsbG"
+ selection-set mask=0001 ["Hel"
+PUSH "8s\e\\"
+ selection-set mask=0001 "lo,"]
+
+!Query clipboard
+PUSH "\e]52;c;?\e\\"
+ selection-query mask=0001
+
+!Send clipboard; final chunk len 4
+SELECTION 1 ["Hello,"]
+ output "\e]52;c;SGVsbG8s\e\\"
+
+!Send clipboard; final chunk len 3
+SELECTION 1 ["Hello, w"]
+ output "\e]52;c;SGVsbG8sIHc=\e\\"
+
+!Send clipboard; final chunk len 2
+SELECTION 1 ["Hello, world\n"]
+ output "\e]52;c;SGVsbG8sIHdvcmxkCg==\e\\"
+
+!Send clipboard; split between chunks
+SELECTION 1 ["Hel"
+ output "\e]52;c;SGVs"
+SELECTION 1 "lo,"]
+ output "bG8s\e\\"
+
+!Send clipboard; split within chunk
+SELECTION 1 ["Hello"
+ output "\e]52;c;SGVs"
+SELECTION 1 ","]
+ output "bG8s\e\\"