patch 8.1.0725: conceal mode is not completely tested

Problem:    Conceal mode is not completely tested.
Solution:   Add tests for moving the cursor in Insert mode.

src/testdir/dumps/Test_conceal_two_windows_10.dump

@@ -0,0 +1,20 @@
+|o+0&#ffffff0|n|e| |o|n|e| |o|n|e| |o|n|e| |o|n|e| @55
+|t|w|o| @1|h|e|r|e| @65
+|t|h|r|e@1| @1|t|h|r|e@1| @62
+|S|e|c|o|n|d| |w|i|n|d|o|w| @61
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|[+1#0000000&|N|o| |N|a|m|e|]| |[|+|]| @43|3|,|1|4| @10|A|l@1
+|o+0&&|n|e| |o|n|e| |o|n|e| |o|n|e| |o|n|e| @55
+|t|w|o| |||h|i|d@1|e|n||| |h>e|r|e| @57
+|t|h|r|e@1| @1|t|h|r|e@1| @62
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|[+3#0000000&|N|o| |N|a|m|e|]| |[|+|]| @43|2|,|1|5| @10|A|l@1
+|-+2&&@1| |I|N|S|E|R|T| |-@1| +0&&@62

src/testdir/dumps/Test_conceal_two_windows_11.dump

@@ -0,0 +1,20 @@
+|o+0&#ffffff0|n|e| |o|n|e| |o|n|e| |o|n|e| |o|n|e| @55
+|t|w|o| @1|h|e|r|e| @65
+|t|h|r|e@1| @1|t|h|r|e@1| @62
+|S|e|c|o|n|d| |w|i|n|d|o|w| @61
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|[+1#0000000&|N|o| |N|a|m|e|]| |[|+|]| @43|3|,|1|4| @10|A|l@1
+|o+0&&|n|e| |o|n|e| |o|n|e| |o|n|e| |o|n|e| @55
+|t|w|o| @1|h|e|r|e| @65
+|t|h|r|e@1| |||h|i|d@1|e|n||> |t|h|r|e@1| @54
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|[+3#0000000&|N|o| |N|a|m|e|]| |[|+|]| @43|3|,|1|5| @10|A|l@1
+|-+2&&@1| |I|N|S|E|R|T| |-@1| +0&&@62

src/testdir/dumps/Test_conceal_two_windows_12.dump

@@ -0,0 +1,20 @@
+|o+0&#ffffff0|n|e| |o|n|e| |o|n|e| |o|n|e| |o|n|e| @55
+|t|w|o| @1|h|e|r|e| @65
+|t|h|r|e@1| @1|t|h|r|e@1| @62
+|S|e|c|o|n|d| |w|i|n|d|o|w| @61
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|[+1#0000000&|N|o| |N|a|m|e|]| |[|+|]| @43|3|,|1|4| @10|A|l@1
+|o+0&&|n|e| |o|n|e| |o|n|e| |o|n|e| |o|n|e| @55
+|t|w|o| @1|h|e|r|e| @65
+|t|h|r|e@1| |||h|i|d@1|e|n>|| |t|h|r|e@1| @54
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|[+3#0000000&|N|o| |N|a|m|e|]| |[|+|]| @43|3|,|1|4| @10|A|l@1
+| +0&&@74

src/testdir/dumps/Test_conceal_two_windows_13.dump

@@ -0,0 +1,20 @@
+|o+0&#ffffff0|n|e| |o|n|e| |o|n|e| |o|n|e| |o|n|e| @55
+|t|w|o| @1|h|e|r|e| @65
+|t|h|r|e@1| @1|t|h|r|e@1| @62
+|S|e|c|o|n|d| |w|i|n|d|o|w| @61
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|[+1#0000000&|N|o| |N|a|m|e|]| |[|+|]| @43|3|,|1|4| @10|A|l@1
+|o+0&&|n|e| |o|n|e| |o|n|e| |o|n|e| |o|n|e| @55
+|t|w|o| @1|h|e|r|e| @65
+|t|h|r|e@1| @1|t|h|r|e@1| @62
+> @74
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|[+3#0000000&|N|o| |N|a|m|e|]| |[|+|]| @43|4|,|1| @11|A|l@1
+|-+2&&@1| |I|N|S|E|R|T| |-@1| +0&&@62

src/testdir/test_conceal.vim

@@ -91,6 +91,20 @@ func Test_conceal_two_windows()
   call VerifyScreenDump(buf, 'Test_conceal_two_windows_09v', {})
   call term_sendkeys(buf, "\<Esc>")
 
+  " Check moving the cursor while in insert mode.
+  call term_sendkeys(buf, ":set concealcursor=\r")
+  call term_sendkeys(buf, "a")
+  call VerifyScreenDump(buf, 'Test_conceal_two_windows_10', {})
+  call term_sendkeys(buf, "\<Down>")
+  call VerifyScreenDump(buf, 'Test_conceal_two_windows_11', {})
+  call term_sendkeys(buf, "\<Esc>")
+
+  " Check the "o" command
+  call VerifyScreenDump(buf, 'Test_conceal_two_windows_12', {})
+  call term_sendkeys(buf, "o")
+  call VerifyScreenDump(buf, 'Test_conceal_two_windows_13', {})
+  call term_sendkeys(buf, "\<Esc>")
+
   " clean up
   call StopVimInTerminal(buf)
   call delete('XTest_conceal')

src/version.c

@@ -795,6 +795,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    725,
 /**/
     724,
 /**/