patch 8.0.1016: gnome terminal echoes t_RC
Problem: Gnome terminal echoes t_RC.
Solution: Detect Gnome terminal by the version string. Add v: variables for
all the term responses.
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 7205c89..a75d4f6 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1902,6 +1902,26 @@
always 95 or bigger). Pc is always zero.
{only when compiled with |+termresponse| feature}
+ *v:termblinkresp*
+v:termblinkresp The escape sequence returned by the terminal for the |t_RC|
+ termcap entry. This is used to find out whether the terminal
+ cursor is blinking. This is used by |term_getcursor()|.
+
+ *v:termstyleresp*
+v:termstyleresp The escape sequence returned by the terminal for the |t_RS|
+ termcap entry. This is used to find out what the shape of the
+ cursor is. This is used by |term_getcursor()|.
+
+ *v:termrgbresp*
+v:termrgbresp The escape sequence returned by the terminal for the |t_RB|
+ termcap entry. This is used to find out what the terminal
+ background color is, see 'background'.
+
+ *v:termu7resp*
+v:termu7resp The escape sequence returned by the terminal for the |t_u7|
+ termcap entry. This is used to find out what the terminal
+ does with ambiguous width characters, see 'ambiwidth'.
+
*v:testing* *testing-variable*
v:testing Must be set before using `test_garbagecollect_now()`.
Also, when set certain error messages won't be shown for 2