patch 9.1.0068: Visual highlighting can still be improvedv9.1.0068

Problem:  Visual highlighting can still be improved
Solution: Update Visual highlighting for 8 color terminals,
          use uniform grey highlighting for dark and light bg
          (Maxim Kim)

Update terminal Visual

1. Use `ctermbg=Grey ctermfg=Black` for both dark and light

This uniforms Visual highlighting between default dark and light colors
And should work for vim usually detecting light background for terminals
with black/dark background colors.

Previously used `ctermfg=White` leaks `cterm=bold` if available colors
are less than 16.

2. Use `term=reverse cterm=reverse ctermbg=NONE ctermfg=NONE`
   for terminals reporting less than 8 colors available

If the terminal has less than 8 colors, grey just doesn't work right

closes: #13940

Signed-off-by: Maxim Kim <habamax@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

38 files changed, 74 insertions, 74 deletions

diff --git a/src/testdir/dumps/Test_balloon_eval_term_02.dump b/src/testdir/dumps/Test_balloon_eval_term_02.dump
index 4771b32958..f3bd6331c7 100644
--- a/src/testdir/dumps/Test_balloon_eval_term_02.dump
+++ b/src/testdir/dumps/Test_balloon_eval_term_02.dump
@@ -1,6 +1,6 @@
 |o+0&#ffffff0|n|e| |o|n|e| |o|n|e| @38
 |t|w|o| |t|X|o| |t|w|o| @38
-|t|h|r|e|e+0#ffffff16#6c6c6c255| |t|h>r+0#0000000#ffffff0|e@1| |t|h|r|e@1| @32
+|t|h|r|e|e+0#0000001#a8a8a8255| |t|h>r+0#0000000#ffffff0|e@1| |t|h|r|e@1| @32
 |~+0#4040ff13&| @2| +0#0000001#ffd7ff255@17| +0#4040ff13#ffffff0@27
 |~| @2| +0#0000001#ffd7ff255|l|i|n|e| |3| |c|o|l|u|m|n| |5|:| | +0#4040ff13#ffffff0@27
 |~| @2| +0#0000001#ffd7ff255|e| |t|h|r|<| @10| +0#4040ff13#ffffff0@27
diff --git a/src/testdir/dumps/Test_cursorline_with_visualmode_01.dump b/src/testdir/dumps/Test_cursorline_with_visualmode_01.dump
index d0b3677246..326abac370 100644
--- a/src/testdir/dumps/Test_cursorline_with_visualmode_01.dump
+++ b/src/testdir/dumps/Test_cursorline_with_visualmode_01.dump
@@ -1,9 +1,9 @@
-|a+0#ffffff16#6c6c6c255|b|c| | +0#0000000#ffffff0@70
-|a+0#ffffff16#6c6c6c255|b|c| | +0#0000000#ffffff0@70
-|a+0#ffffff16#6c6c6c255|b|c| | +0#0000000#ffffff0@70
-|a+0#ffffff16#6c6c6c255|b|c| | +0#0000000#ffffff0@70
-|a+0#ffffff16#6c6c6c255|b|c| | +0#0000000#ffffff0@70
->a|b+0#ffffff16#6c6c6c255|c| | +0#0000000#ffffff0@70
+|a+0#0000001#a8a8a8255|b|c| | +0#0000000#ffffff0@70
+|a+0#0000001#a8a8a8255|b|c| | +0#0000000#ffffff0@70
+|a+0#0000001#a8a8a8255|b|c| | +0#0000000#ffffff0@70
+|a+0#0000001#a8a8a8255|b|c| | +0#0000000#ffffff0@70
+|a+0#0000001#a8a8a8255|b|c| | +0#0000000#ffffff0@70
+>a|b+0#0000001#a8a8a8255|c| | +0#0000000#ffffff0@70
 |a|b|c| @71
 |a|b|c| @71
 |a|b|c| @71
diff --git a/src/testdir/dumps/Test_display_scroll_update_visual.dump b/src/testdir/dumps/Test_display_scroll_update_visual.dump
index 3f5a01f27a..4b17a3b887 100644
--- a/src/testdir/dumps/Test_display_scroll_update_visual.dump
+++ b/src/testdir/dumps/Test_display_scroll_update_visual.dump
@@ -1,4 +1,4 @@
-| +0#0000e05#a8a8a8255@1>f+0#0000000#ffffff0|o+0#ffffff16#6c6c6c255@1| | +0#0000000#ffffff0@53
+| +0#0000e05#a8a8a8255@1>f+0#0000000#ffffff0|o+0#0000001#a8a8a8255@1| | +0#0000000#ffffff0@53
 | +0#0000e05#a8a8a8255@1|f+0#0000000#ffffff0|o@1| @54
 | +0#0000e05#a8a8a8255@1|f+0#0000000#ffffff0|o@1| @54
 | +0#0000e05#a8a8a8255@1|f+0#0000000#ffffff0|o@1| @54
diff --git a/src/testdir/dumps/Test_echowin_showmode.dump b/src/testdir/dumps/Test_echowin_showmode.dump
index ec5110225e..9a73bbf25a 100644
--- a/src/testdir/dumps/Test_echowin_showmode.dump
+++ b/src/testdir/dumps/Test_echowin_showmode.dump
@@ -1,4 +1,4 @@
->o+0&#ffffff0|n+0#ffffff16#6c6c6c255|e| | +0#0000000#ffffff0@70
+>o+0&#ffffff0|n+0#0000001#a8a8a8255|e| | +0#0000000#ffffff0@70
 |t|w|o| @71
 |~+0#4040ff13&| @73
 |~| @73
diff --git a/src/testdir/dumps/Test_hlsearch_visual_1.dump b/src/testdir/dumps/Test_hlsearch_visual_1.dump
index dcdbe3aa78..e65d56764e 100644
--- a/src/testdir/dumps/Test_hlsearch_visual_1.dump
+++ b/src/testdir/dumps/Test_hlsearch_visual_1.dump
@@ -1,6 +1,6 @@
-|x+0&#ffffff0@2| |y+2&#ffff4012|y+2#ffffff16#6c6c6c255@1| +0&&|z@2| | +0#0000000#ffffff0@27
-|x+0#ffffff16#6c6c6c255@2| |y+2&&@2| +0&&|z@2| | +0#0000000#ffffff0@27
-|x+0#ffffff16#6c6c6c255@2| |y+2&&>y+2#0000000#ffff4012@1| +0&#ffffff0|z@2| @28
+|x+0&#ffffff0@2| |y+2&#ffff4012|y+2#0000001#a8a8a8255@1| +0&&|z@2| | +0#0000000#ffffff0@27
+|x+0#0000001#a8a8a8255@2| |y+2&&@2| +0&&|z@2| | +0#0000000#ffffff0@27
+|x+0#0000001#a8a8a8255@2| |y+2&&>y+2#0000000#ffff4012@1| +0&#ffffff0|z@2| @28
 |~+0#4040ff13&| @38
 |~| @38
 |-+2#0000000&@1| |V|I|S|U|A|L| |-@1|3+0&&| @8|3|,|6| @10|A|l@1| 
diff --git a/src/testdir/dumps/Test_popup_command_03.dump b/src/testdir/dumps/Test_popup_command_03.dump
index c01af05ca2..2a0c5af50b 100644
--- a/src/testdir/dumps/Test_popup_command_03.dump
+++ b/src/testdir/dumps/Test_popup_command_03.dump
@@ -1,5 +1,5 @@
 |o+0&#ffffff0|n|e| |t|w|o| |t|h|r|e@1| |f|o|u|r| |f|i|v|e| @51
-|a|n|d| |o|n|e| |t|w|o| |X+0#ffffff16#6c6c6c255|t|h|r|e@1> +0#0000000#ffffff0|f|o|u|r| |f|i|v|e| @46
+|a|n|d| |o|n|e| |t|w|o| |X+0#0000001#a8a8a8255|t|h|r|e@1> +0#0000000#ffffff0|f|o|u|r| |f|i|v|e| @46
 |o|n|e| |m|o|r|e| |t|w|o| |t|h|r|e@1| |f|o|u|r| |f|i|v|e| @46
 |~+0#4040ff13&| @73
 |~| @73
diff --git a/src/testdir/dumps/Test_prop_inserts_text_1.dump b/src/testdir/dumps/Test_prop_inserts_text_1.dump
index 3e4d74abcb..7a51c12569 100644
--- a/src/testdir/dumps/Test_prop_inserts_text_1.dump
+++ b/src/testdir/dumps/Test_prop_inserts_text_1.dump
@@ -1,6 +1,6 @@
 |i+0&#ffffff0|n|s|e|r|t| |s|o|m|e| |t|e|x|t| |S+0#ffffff16#e000002|O|M|E| |h+0#0000000#ffffff0|e|r|e| |a|n|d| |o|t|h|e|r| |t|e|x|t| |O+0&#ffff4012|T|H|E|R| |t+0&#ffffff0|h|e|r|e| |a|n|d| |s|o
 |m|e| |m|o|r|e| |t|e|x|t| |a|f|t|e|r| |M+0&#5fd7ff255|O|R|E| |w+0&#ffffff0|r|a|p@1|i|n>g| @27
-|p|r|e|s+0#ffffff16#6c6c6c255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s|t| @40
+|p|r|e|s+0#0000001#a8a8a8255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s|t| @40
 |F|o@1| |f|o@1| |=| |{| |.+0#0000e05&|x|=|1+0#0000000&|,| |.+0#0000e05&|y|=|2+0#0000000&| |}|;| @34
 |e+0#ffffff16#e000002|m|p|t|y| |l|i|n|e| +0#0000000#ffffff0@49
 |l|o@1|k| |n|o| |h|i|g|h|l|i|g|h|t| @42
diff --git a/src/testdir/dumps/Test_prop_inserts_text_2.dump b/src/testdir/dumps/Test_prop_inserts_text_2.dump
index 08bbcb93f8..c9c325f8ba 100644
--- a/src/testdir/dumps/Test_prop_inserts_text_2.dump
+++ b/src/testdir/dumps/Test_prop_inserts_text_2.dump
@@ -1,6 +1,6 @@
 | +0#0000e05#a8a8a8255@1|i+0#0000000#ffffff0|n|s|e|r|t| |s|o|m|e| |t|e|x|t| |S+0#ffffff16#e000002|O|M|E| |h+0#0000000#ffffff0|e|r|e| |a|n|d| |o|t|h|e|r| |t|e|x|t| |O+0&#ffff4012|T|H|E|R| |t+0&#ffffff0|h|e|r|e| |a|n|d| 
 | +0#0000e05#a8a8a8255@1|s+0#0000000#ffffff0|o|m|e| |m|o|r|e| |t|e|x|t| |a|f|t|e|r| |M+0&#5fd7ff255|O|R|E| |w+0&#ffffff0|r|a|p@1|i|n>g| @23
-| +0#0000e05#a8a8a8255@1|p+0#0000000#ffffff0|r|e|s+0#ffffff16#6c6c6c255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s|t| @38
+| +0#0000e05#a8a8a8255@1|p+0#0000000#ffffff0|r|e|s+0#0000001#a8a8a8255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s|t| @38
 | +0#0000e05#a8a8a8255@1|F+0#0000000#ffffff0|o@1| |f|o@1| |=| |{| |.+0#0000e05&|x|=|1+0#0000000&|,| |.+0#0000e05&|y|=|2+0#0000000&| |}|;| @32
 | +0#0000e05#a8a8a8255@1|e+0#ffffff16#e000002|m|p|t|y| |l|i|n|e| +0#0000000#ffffff0@47
 | +0#0000e05#a8a8a8255@1|l+0#0000000#ffffff0|o@1|k| |n|o| |h|i|g|h|l|i|g|h|t| @40
diff --git a/src/testdir/dumps/Test_prop_inserts_text_3.dump b/src/testdir/dumps/Test_prop_inserts_text_3.dump
index 7fe8a86ead..2b935540f4 100644
--- a/src/testdir/dumps/Test_prop_inserts_text_3.dump
+++ b/src/testdir/dumps/Test_prop_inserts_text_3.dump
@@ -1,6 +1,6 @@
 | +0#0000e05#a8a8a8255@1|i+0#0000000#ffffff0|n|s|e|r|t| |s|o|m|e| |t|e|x|t| |S+0#ffffff16#e000002|O|M|E| |h+0#0000000#ffffff0|e|r|e| |a|n|d| |o|t|h|e|r| |t|e|x|t| |O+0&#ffff4012|T|H|E|R| |t+0&#ffffff0|h|e|r|e| |a|n|d| 
 | +0#0000e05#a8a8a8255@1|s+0#0000000#ffffff0|o|m|e| |m|o|r|e| |t|e|x|t| |a|f|t|e|r| |M+0&#5fd7ff255|O|R|E| |w+0&#ffffff0|r|a|p@1|i|n|g| @23
-| +0#0000e05#a8a8a8255@1|p+0#0000000#ffffff0|r|e|s+0#ffffff16#6c6c6c255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s>t| @38
+| +0#0000e05#a8a8a8255@1|p+0#0000000#ffffff0|r|e|s+0#0000001#a8a8a8255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s>t| @38
 | +0#0000e05#a8a8a8255@1|F+0#0000000#ffffff0|o@1| |f|o@1| |=| |{| |.+0#0000e05&|x|=|1+0#0000000&|,| |.+0#0000e05&|y|=|2+0#0000000&| |}|;| @32
 | +0#0000e05#a8a8a8255@1|e+0#ffffff16#e000002|m|p|t|y| |l|i|n|e| +0#0000000#ffffff0@47
 | +0#0000e05#a8a8a8255@1|l+0#0000000#ffffff0|o@1|k| |n|o| |h|i|g|h|l|i|g|h|t| @40
diff --git a/src/testdir/dumps/Test_prop_inserts_text_4.dump b/src/testdir/dumps/Test_prop_inserts_text_4.dump
index efae55310d..83e656a27a 100644
--- a/src/testdir/dumps/Test_prop_inserts_text_4.dump
+++ b/src/testdir/dumps/Test_prop_inserts_text_4.dump
@@ -1,6 +1,6 @@
 | +0#0000e05#a8a8a8255@1|i+0#0000000#ffffff0|n|s|e|r|t| |s|o|m|e| |t|e|x|t| |S+0#ffffff16#e000002|O|M|E| |h+0#0000000#ffffff0|e|r|e| |a|n|d| |o|t|h|e|r| |t|e|x|t| |O+0&#ffff4012|T|H|E|R| |t+0&#ffffff0|h|e|r|e| |a|n|d| 
 | +0#0000e05#a8a8a8255@1|s+0#0000000#ffffff0|o|m|e| |m|o|r|e| |t|e|x|t| |a|f|t|e|r| |M+0&#5fd7ff255|O|R|E| |w+0&#ffffff0|r|a|p@1|i|n|g| @23
-| +0#0000e05#a8a8a8255@1|p+0#0000000#ffffff0|r|e|s+0#ffffff16#6c6c6c255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s|t| @38
+| +0#0000e05#a8a8a8255@1|p+0#0000000#ffffff0|r|e|s+0#0000001#a8a8a8255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s|t| @38
 | +0#0000e05#a8a8a8255@1|F+0#0000000#ffffff0|o@1| |f|o@1| |=| |{| |.+0#0000e05&|x|=>1+0#0000000&|,| |.+0#0000e05&|y|=|2+0#0000000&| |}|;| @32
 | +0#0000e05#a8a8a8255@1|e+0#ffffff16#e000002|m|p|t|y| |l|i|n|e| +0#0000000#ffffff0@47
 | +0#0000e05#a8a8a8255@1|l+0#0000000#ffffff0|o@1|k| |n|o| |h|i|g|h|l|i|g|h|t| @40
diff --git a/src/testdir/dumps/Test_prop_inserts_text_5.dump b/src/testdir/dumps/Test_prop_inserts_text_5.dump
index cb48661989..2885d4d08a 100644
--- a/src/testdir/dumps/Test_prop_inserts_text_5.dump
+++ b/src/testdir/dumps/Test_prop_inserts_text_5.dump
@@ -1,6 +1,6 @@
 | +0#0000e05#a8a8a8255@1|i+0#0000000#ffffff0|n|s|e|r|t| |s|o|m|e| |t|e|x|t| |S+0#ffffff16#e000002|O|M|E| |h+0#0000000#ffffff0|e|r|e| |a|n|d| |o|t|h|e|r| |t|e|x|t| |O+0&#ffff4012|T|H|E|R| |t+0&#ffffff0|h|e|r|e| |a|n|d| 
 | +0#0000e05#a8a8a8255@1|s+0#0000000#ffffff0|o|m|e| |m|o|r|e| |t|e|x|t| |a|f|t|e|r| |M+0&#5fd7ff255|O|R|E| |w+0&#ffffff0|r|a|p@1|i|n|g| @23
-| +0#0000e05#a8a8a8255@1|p+0#0000000#ffffff0|r|e|s+0#ffffff16#6c6c6c255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s|t| @38
+| +0#0000e05#a8a8a8255@1|p+0#0000000#ffffff0|r|e|s+0#0000001#a8a8a8255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s|t| @38
 | +0#0000e05#a8a8a8255@1|F+0#0000000#ffffff0|o@1| |f|o@1| |=| |{| |.+0#0000e05&|x|=|1+0#0000000&|,| |.+0#0000e05&|y|=>2+0#0000000&| |}|;| @32
 | +0#0000e05#a8a8a8255@1|e+0#ffffff16#e000002|m|p|t|y| |l|i|n|e| +0#0000000#ffffff0@47
 | +0#0000e05#a8a8a8255@1|l+0#0000000#ffffff0|o@1|k| |n|o| |h|i|g|h|l|i|g|h|t| @40
diff --git a/src/testdir/dumps/Test_prop_inserts_text_6.dump b/src/testdir/dumps/Test_prop_inserts_text_6.dump
index de2bf45047..5aeddb4da1 100644
--- a/src/testdir/dumps/Test_prop_inserts_text_6.dump
+++ b/src/testdir/dumps/Test_prop_inserts_text_6.dump
@@ -1,6 +1,6 @@
 | +0#0000e05#a8a8a8255@1|i+0#0000000#ffffff0|n|s|e|r|t| |s|o|m|e| |t|e|x|t| |S+0#ffffff16#e000002|O|M|E| |h+0#0000000#ffffff0|e|r|e| |a|n|d| |o|t|h|e|r| |t|e|x|t| |O+0&#ffff4012|T|H|E|R| |t+0&#ffffff0|h|e|r|e| |a|n|d| 
 | +0#0000e05#a8a8a8255@1|s+0#0000000#ffffff0|o|m|e| |m|o|r|e| |t|e|x|t| |a|f|t|e|r| |M+0&#5fd7ff255|O|R|E| |w+0&#ffffff0|r|a|p@1|i|n|g| @23
-| +0#0000e05#a8a8a8255@1|p+0#0000000#ffffff0|r|e|s+0#ffffff16#6c6c6c255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s|t| @38
+| +0#0000e05#a8a8a8255@1|p+0#0000000#ffffff0|r|e|s+0#0000001#a8a8a8255|ö|m|e|和*&|平|t+&|é|x|t|p+0#0000000#ffffff0|o|s|t| @38
 | +0#0000e05#a8a8a8255@1|F+0#0000000#ffffff0|o@1| |f|o@1| |=| |{| |.+0#0000e05&|x|=|1+0#0000000&|,| |.+0#0000e05&|y|=|2+0#0000000&| |}|;| @32
 | +0#0000e05#a8a8a8255@1>e+0#ffffff16#e000002|m|p|t|y| |l|i|n|e| +0#0000000#ffffff0@47
 | +0#0000e05#a8a8a8255@1|l+0#0000000#ffffff0|o@1|k| |n|o| |h|i|g|h|l|i|g|h|t| @40
diff --git a/src/testdir/dumps/Test_prop_inserts_text_visual_block_2.dump b/src/testdir/dumps/Test_prop_inserts_text_visual_block_2.dump
index 7d6865ecd7..48d8ebc984 100644
--- a/src/testdir/dumps/Test_prop_inserts_text_visual_block_2.dump
+++ b/src/testdir/dumps/Test_prop_inserts_text_visual_block_2.dump
@@ -1,6 +1,6 @@
-|1+0#ffffff16#6c6c6c255|2|3+0#0000000#ffffff0|4|5|6|7|8|9| @50
-|1+0#ffffff16#6c6c6c255|-+0#e000e06#ffffff0|口*&|-+&|2+0#0000000&|3|4|5|6|7|8|9| @46
-|1+0#ffffff16#6c6c6c255|2|口*0#e000e06#ffffff0|3+0#0000000&|4|5|6|7|8|9| @48
-|1+0#ffffff16#6c6c6c255>2+0#0000000#ffffff0|3|4|5|6|7|8|9| @50
+|1+0#0000001#a8a8a8255|2|3+0#0000000#ffffff0|4|5|6|7|8|9| @50
+|1+0#0000001#a8a8a8255|-+0#e000e06#ffffff0|口*&|-+&|2+0#0000000&|3|4|5|6|7|8|9| @46
+|1+0#0000001#a8a8a8255|2|口*0#e000e06#ffffff0|3+0#0000000&|4|5|6|7|8|9| @48
+|1+0#0000001#a8a8a8255>2+0#0000000#ffffff0|3|4|5|6|7|8|9| @50
 |~+0#4040ff13&| @58
 |-+2#0000000&@1| |V|I|S|U|A|L| |B|L|O|C|K| |-@1| +0&&@13|4|x|2| @6|4|,|2| @10|A|l@1| 
diff --git a/src/testdir/dumps/Test_prop_inserts_text_visual_block_3.dump b/src/testdir/dumps/Test_prop_inserts_text_visual_block_3.dump
index 32d3942474..0234ba4678 100644
--- a/src/testdir/dumps/Test_prop_inserts_text_visual_block_3.dump
+++ b/src/testdir/dumps/Test_prop_inserts_text_visual_block_3.dump
@@ -1,6 +1,6 @@
-|1+0#ffffff16#6c6c6c255|2|3|4+0#0000000#ffffff0|5|6|7|8|9| @50
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