runtime(vim): Update syntax file (#13671)

Support multiline :syntax commands.

Match :syn-cchar option in :syn-{keyword,region}.

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

9 files changed, 205 insertions, 23 deletions

diff --git a/runtime/syntax/testdir/dumps/vim_syntax_00.dump b/runtime/syntax/testdir/dumps/vim_syntax_00.dump
new file mode 100644
index 0000000000..db529678e5
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_syntax_00.dump
@@ -0,0 +1,20 @@
+>"+0#0000e05#ffffff0| |V|i|m| |:|s|y|n|t|a|x| |h|i|g|h|l|i|g|h|t|i|n|g| +0#0000000&@48
+@75
+|s+0#af5f00255&|y|n| +0#0000000&|k+0#00e0003&|e|y|w|o|r|d| +0#0000000&|t+0#00e0003&|e|s|t|K|e|y|w|o|r|d| +0#0000000&@51
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|c|e|a|l| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&@1|h|a|r|=|&+0#e000002&| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|e|d| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|e|d|i|n|=|t+0#0000000&|e|s|t|C|o|n|t|a|i|n|e|r| @41
+@6|\+0#e000e06&| +0#0000000&|n+0#e000e06&|e|x|t|g|r|o|u|p|=|t+0#0000000&|e|s|t|N|e|x|t|,|@|t|e|s|t|C|l|u|s|t|e|r| @35
+@6|\+0#e000e06&| +0#0000000&|t+0#e000e06&|r|a|n|s|p|a|r|e|n|t| +0#0000000&@55
+@6|\+0#e000e06&| +0#0000000&|s+0#e000e06&|k|i|p|w|h|i|t|e| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|s+0#e000e06&|k|i|p|e|m|p|t|y| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|s+0#e000e06&|k|i|p|n|l| +0#0000000&@60
+@6|\+0#e000e06&| +0#0000000&|k|e|y|w|o|r|d|1| @58
+@6|\+0#e000e06&| +0#0000000&|k|e|y|w|o|r|d|2| @58
+@6|\+0#e000e06&| +0#0000000&|k|e|y|w|o|r|d|3| @58
+@75
+|s+0#af5f00255&|y|n| +0#0000000&|m+0#00e0003&|a|t|c|h| +0#0000000&|t+0#00e0003&|e|s|t|M|a|t|c|h| +0#0000000&@55
+@6|\+0#e000e06&| +0#0000000&|"+0#e000002&|p|a|t@1|e|r|n|"| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|c|e|a|l| +0#0000000&@59
+|"|i|n|p|u|t|/|v|i|m|_|s|y|n|t|a|x|.|v|i|m|"| |7|5|L|,| |1|5|0|2|B| @23|1|,|1| @10|T|o|p| 
diff --git a/runtime/syntax/testdir/dumps/vim_syntax_01.dump b/runtime/syntax/testdir/dumps/vim_syntax_01.dump
new file mode 100644
index 0000000000..e09801dff0
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_syntax_01.dump
@@ -0,0 +1,20 @@
+| +0&#ffffff0@5|\+0#e000e06&| +0#0000000&|k|e|y|w|o|r|d|2| @58
+@6|\+0#e000e06&| +0#0000000&|k|e|y|w|o|r|d|3| @58
+@75
+|s+0#af5f00255&|y|n| +0#0000000&|m+0#00e0003&|a|t|c|h| +0#0000000&|t+0#00e0003&|e|s|t|M|a|t|c|h| +0#0000000&@55
+@6|\+0#e000e06&| +0#0000000&|"+0#e000002&|p|a|t@1|e|r|n|"| +0#0000000&@57
+@6>\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|c|e|a|l| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&@1|h|a|r|=|&+0#e000002&| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|e|d| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|e|d|i|n|=|t+0#0000000&|e|s|t|C|o|n|t|a|i|n|e|r| @41
+@6|\+0#e000e06&| +0#0000000&|n+0#e000e06&|e|x|t|g|r|o|u|p|=|t+0#0000000&|e|s|t|N|e|x|t|,|@|t|e|s|t|C|l|u|s|t|e|r| @35
+@6|\+0#e000e06&| +0#0000000&|t+0#e000e06&|r|a|n|s|p|a|r|e|n|t| +0#0000000&@55
+@6|\+0#e000e06&| +0#0000000&|s+0#e000e06&|k|i|p|w|h|i|t|e| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|s+0#e000e06&|k|i|p|e|m|p|t|y| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|s+0#e000e06&|k|i|p|n|l| +0#0000000&@60
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|s|=|t+0#0000000&|e|s|t|C|o|n|t|a|i|n|e|d|1|,|t|e|s|t|C|o|n|t|a|i|n|e|d|2| @28
+@6|\+0#e000e06&| +0#0000000&|f+0#e000e06&|o|l|d| +0#0000000&@62
+@6|\+0#e000e06&| +0#0000000&|d+0#e000e06&|i|s|p|l|a|y| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|e+0#e000e06&|x|t|e|n|d| +0#0000000&@60
+@6|\+0#e000e06&| +0#0000000&|e+0#e000e06&|x|c|l|u|d|e|n|l| +0#0000000&@57
+@57|1|9|,|7| @9|2|3|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_syntax_02.dump b/runtime/syntax/testdir/dumps/vim_syntax_02.dump
new file mode 100644
index 0000000000..063a33b767
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_syntax_02.dump
@@ -0,0 +1,20 @@
+| +0&#ffffff0@5|\+0#e000e06&| +0#0000000&|e+0#e000e06&|x|c|l|u|d|e|n|l| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|k+0#e000e06&|e@1|p|e|n|d| +0#0000000&@59
+@75
+|s+0#af5f00255&|y|n| +0#0000000&|r+0#00e0003&|e|g|i|o|n| +0#0000000&|t+0#00e0003&|e|s|t|R|e|g|i|o|n| +0#0000000&@53
+@6|\+0#e000e06&| +0#0000000&|s+0#00e0003&|t|a|r|t|=+0#0000000&|"+0#e000002&|s|t|a|r|t|-|p|a|t@1|e|r|n|"| +0#0000000&@45
+@6>\+0#e000e06&| +0#0000000&|e+0#00e0003&|n|d|=+0#0000000&|"+0#e000002&|e|n|d|-|p|a|t@1|e|r|n|"| +0#0000000&@49
+@6|\+0#e000e06&| +0#0000000&|s+0#00e0003&|k|i|p|=+0#0000000&|"+0#e000002&|s|k|i|p|-|p|a|t@1|e|r|n|"| +0#0000000&@47
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|e|d| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|c|e|a|l| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&@1|h|a|r|=|&+0#e000002&| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|e|d| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|e|d|i|n|=|t+0#0000000&|e|s|t|C|o|n|t|a|i|n|e|r| @41
+@6|\+0#e000e06&| +0#0000000&|n+0#e000e06&|e|x|t|g|r|o|u|p|=|t+0#0000000&|e|s|t|N|e|x|t|,|@|t|e|s|t|C|l|u|s|t|e|r| @35
+@6|\+0#e000e06&| +0#0000000&|t+0#e000e06&|r|a|n|s|p|a|r|e|n|t| +0#0000000&@55
+@6|\+0#e000e06&| +0#0000000&|s+0#e000e06&|k|i|p|w|h|i|t|e| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|s+0#e000e06&|k|i|p|e|m|p|t|y| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|s+0#e000e06&|k|i|p|n|l| +0#0000000&@60
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|s|=|t+0#0000000&|e|s|t|C|o|n|t|a|i|n|e|d|1|,|t|e|s|t|C|o|n|t|a|i|n|e|d|2| @28
+@6|\+0#e000e06&| +0#0000000&|o+0#e000e06&|n|e|l|i|n|e| +0#0000000&@59
+@57|3|7|,|7| @9|5@1|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_syntax_03.dump b/runtime/syntax/testdir/dumps/vim_syntax_03.dump
new file mode 100644
index 0000000000..b3a23ddc72
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_syntax_03.dump
@@ -0,0 +1,20 @@
+| +0&#ffffff0@5|\+0#e000e06&| +0#0000000&|o+0#e000e06&|n|e|l|i|n|e| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|f+0#e000e06&|o|l|d| +0#0000000&@62
+@6|\+0#e000e06&| +0#0000000&|d+0#e000e06&|i|s|p|l|a|y| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|e+0#e000e06&|x|t|e|n|d| +0#0000000&@60
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|c|e|a|l|e|n|d|s| +0#0000000&@55
+@6>\+0#e000e06&| +0#0000000&|e+0#e000e06&|x|c|l|u|d|e|n|l| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|k+0#e000e06&|e@1|p|e|n|d| +0#0000000&@59
+@75
+|s+0#af5f00255&|y|n| +0#0000000&|c+0#00e0003&|l|u|s|t|e|r| +0#0000000&|t+0#00e0003&|e|s|t|C|l|u|s|t|e|r| +0#0000000&@51
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|s|=|t+0#0000000&|e|s|t|C|o|n|t|a|i|n|e|d|1|,|t|e|s|t|C|o|n|t|a|i|n|e|d|2|,|t|e|s|t|C|o|n|t|a|i|n|e|d|3| @13
+@75
+|s+0#af5f00255&|y|n| +0#0000000&|c+0#00e0003&|l|u|s|t|e|r| +0#0000000&|t+0#00e0003&|e|s|t|C|l|u|s|t|e|r| +0#0000000&@51
+@6|\+0#e000e06&| +0#0000000&|a+0#e000e06&|d@1|=|t+0#0000000&|e|s|t|A|d@1| @55
+@6|\+0#e000e06&| +0#0000000&|r+0#e000e06&|e|m|o|v|e|=|t+0#0000000&|e|s|t|R|e|m|o|v|e| @49
+@75
+@75
+|"+0#0000e05&| |c|h|e|c|k| |m|u|l|t|i|l|i|n|e| |g|r|o|u|p| |l|i|s|t| +0#0000000&@46
+|s+0#af5f00255&|y|n| +0#0000000&|k+0#00e0003&|e|y|w|o|r|d| +0#0000000&|t+0#00e0003&|e|s|t|K|e|y|w|o|r|d| +0#0000000&@51
+@6|\+0#e000e06&| +0#0000000&|n+0#e000e06&|e|x|t|g|r|o|u|p|=| +0#0000000&@56
+@57|5@1|,|7| @9|8|7|%| 
diff --git a/runtime/syntax/testdir/dumps/vim_syntax_99.dump b/runtime/syntax/testdir/dumps/vim_syntax_99.dump
new file mode 100644
index 0000000000..c50589d579
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_syntax_99.dump
@@ -0,0 +1,20 @@
+| +0&#ffffff0@74
+|s+0#af5f00255&|y|n| +0#0000000&|c+0#00e0003&|l|u|s|t|e|r| +0#0000000&|t+0#00e0003&|e|s|t|C|l|u|s|t|e|r| +0#0000000&@51
+@6|\+0#e000e06&| +0#0000000&|c+0#e000e06&|o|n|t|a|i|n|s|=|t+0#0000000&|e|s|t|C|o|n|t|a|i|n|e|d|1|,|t|e|s|t|C|o|n|t|a|i|n|e|d|2|,|t|e|s|t|C|o|n|t|a|i|n|e|d|3| @13
+@75
+|s+0#af5f00255&|y|n| +0#0000000&|c+0#00e0003&|l|u|s|t|e|r| +0#0000000&|t+0#00e0003&|e|s|t|C|l|u|s|t|e|r| +0#0000000&@51
+@6|\+0#e000e06&| +0#0000000&|a+0#e000e06&|d@1|=|t+0#0000000&|e|s|t|A|d@1| @55
+@6|\+0#e000e06&| +0#0000000&|r+0#e000e06&|e|m|o|v|e|=|t+0#0000000&|e|s|t|R|e|m|o|v|e| @49
+@75
+@75
+|"+0#0000e05&| |c|h|e|c|k| |m|u|l|t|i|l|i|n|e| |g|r|o|u|p| |l|i|s|t| +0#0000000&@46
+|s+0#af5f00255&|y|n| +0#0000000&|k+0#00e0003&|e|y|w|o|r|d| +0#0000000&|t+0#00e0003&|e|s|t|K|e|y|w|o|r|d| +0#0000000&@51
+@6|\+0#e000e06&| +0#0000000&|n+0#e000e06&|e|x|t|g|r|o|u|p|=| +0#0000000&@56
+@6|\+0#e000e06&| +0#0000000&|t|e|s|t|N|e|x|t| |,| @56
+@6|\+0#e000e06&| +0#0000000&|t|e|s|t|N|e|x|t|2| |,| @55
+@6|\+0#e000e06&| +0#0000000&|@|t|e|s|t|C|l|u|s|t|e|r| @54
+@6|\+0#e000e06&| +0#0000000&|s+0#e000e06&|k|i|p|w|h|i|t|e| +0#0000000&@57
+@6|\+0#e000e06&| +0#0000000&|k|e|y|w|o|r|d|4| @58
+@6|\+0#e000e06&| +0#0000000&|k|e|y|w|o|r|d|5| @58
+@6>\+0#e000e06&| +0#0000000&|k|e|y|w|o|r|d|6| @58
+@57|7|5|,|7| @9|B|o|t| 
diff --git a/runtime/syntax/testdir/dumps/vim_variables_03.dump b/runtime/syntax/testdir/dumps/vim_variables_03.dump
index 3260c374b1..3e8d21cb84 100644
--- a/runtime/syntax/testdir/dumps/vim_variables_03.dump
+++ b/runtime/syntax/testdir/dumps/vim_variables_03.dump
@@ -1,5 +1,5 @@
 |l+0#af5f00255#ffffff0|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| @65
-| +0#e000e06&@5|\| +0#0000000&|b+0#00e0e07&|a|r|]+0#0000000&| |=+0#af5f00255&| +0#0000000&|e|x|p|r| @55
+@6|\+0#e000e06&| +0#0000000&|b+0#00e0e07&|a|r|]+0#0000000&| |=+0#af5f00255&| +0#0000000&|e|x|p|r| @55
 @75
 |l+0#af5f00255&|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|]+0#0000000&| |.+0#af5f00255&|=| +0#0000000&|e|x|p|r| @52
 |l+0#af5f00255&|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|]+0#0000000&| |++0#af5f00255&|=| +0#0000000&|e|x|p|r| @52
@@ -7,8 +7,8 @@
 @75
 |l+0#af5f00255&|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|;+0#0000000&| |b+0#00e0e07&|a|z|]+0#0000000&| |=+0#af5f00255&| +0#0000000&|e|x|p|r| @48
 |l+0#af5f00255&|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| @65
-| +0#e000e06&@5|\| +0#0000000&|b+0#00e0e07&|a|r|;+0#0000000&| @62
-| +0#e000e06&@5|\| +0#0000000&|b+0#00e0e07&|a|z|]+0#0000000&| |=+0#af5f00255&| +0#0000000&|e|x|p|r| @55
+@6|\+0#e000e06&| +0#0000000&|b+0#00e0e07&|a|r|;+0#0000000&| @62
+@6|\+0#e000e06&| +0#0000000&|b+0#00e0e07&|a|z|]+0#0000000&| |=+0#af5f00255&| +0#0000000&|e|x|p|r| @55
 @75
 |l+0#af5f00255&|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|;+0#0000000&| |b+0#00e0e07&|a|z|]+0#0000000&| |.+0#af5f00255&|=| +0#0000000&|e|x|p|r| @47
 |l+0#af5f00255&|e|t| +0#0000000&|[|f+0#00e0e07&|o@1|,+0#0000000&| |b+0#00e0e07&|a|r|;+0#0000000&| |b+0#00e0e07&|a|z|]+0#0000000&| |++0#af5f00255&|=| +0#0000000&|e|x|p|r| @47
diff --git a/runtime/syntax/testdir/dumps/vim_variables_05.dump b/runtime/syntax/testdir/dumps/vim_variables_05.dump
index 7a932601b9..8254fbe481 100644
--- a/runtime/syntax/testdir/dumps/vim_variables_05.dump
+++ b/runtime/syntax/testdir/dumps/vim_variables_05.dump
@@ -2,12 +2,12 @@
 |u+0#af5f00255&|n|l|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&@65
 |u+0#af5f00255&|n|l|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|b+0#00e0e07&|a|r| +0#0000000&@61
 |u+0#af5f00255&|n|l|e|t| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&@65
-| +0#e000e06&@5|\| +0#0000000&|b+0#00e0e07&|a|r| +0#0000000&@63
+@6|\+0#e000e06&| +0#0000000&|b+0#00e0e07&|a|r| +0#0000000&@63
 > @74
 |u+0#af5f00255&|n|l|e|t|!| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&@64
 |u+0#af5f00255&|n|l|e|t|!| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&|b+0#00e0e07&|a|r| +0#0000000&@60
 |u+0#af5f00255&|n|l|e|t|!| +0#0000000&|f+0#00e0e07&|o@1| +0#0000000&@64
-| +0#e000e06&@5|\| +0#0000000&|b+0#00e0e07&|a|r| +0#0000000&@63
+@6|\+0#e000e06&| +0#0000000&|b+0#00e0e07&|a|r| +0#0000000&@63
 @75
 |u+0#af5f00255&|n|l|e|t| +0#0000000&|$+0#e000e06&|F|O@1| +0#0000000&@64
 |u+0#af5f00255&|n|l|e|t|!| +0#0000000&|$+0#e000e06&|F|O@1| +0#0000000&@63
diff --git a/runtime/syntax/testdir/input/vim_syntax.vim b/runtime/syntax/testdir/input/vim_syntax.vim
new file mode 100644
index 0000000000..e8c112cea8
--- /dev/null
+++ b/runtime/syntax/testdir/input/vim_syntax.vim
@@ -0,0 +1,75 @@
+" Vim :syntax highlighting
+
+syn keyword testKeyword
+      \ conceal
+      \ cchar=&
+      \ contained
+      \ containedin=testContainer
+      \ nextgroup=testNext,@testCluster
+      \ transparent
+      \ skipwhite
+      \ skipempty
+      \ skipnl
+      \ keyword1
+      \ keyword2
+      \ keyword3
+
+syn match testMatch
+      \ "pattern"
+      \ conceal
+      \ cchar=&
+      \ contained
+      \ containedin=testContainer
+      \ nextgroup=testNext,@testCluster
+      \ transparent
+      \ skipwhite
+      \ skipempty
+      \ skipnl
+      \ contains=testContained1,testContained2
+      \ fold
+      \ display
+      \ extend
+      \ excludenl
+      \ keepend
+
+syn region testRegion
+      \ start="start-pattern"
+      \ end="end-pattern"
+      \ skip="skip-pattern"
+      \ contained
+      \ conceal
+      \ cchar=&
+      \ contained
+      \ containedin=testContainer
+      \ nextgroup=testNext,@testCluster
+      \ transparent
+      \ skipwhite
+      \ skipempty
+      \ skipnl
+      \ contains=testContained1,testContained2
+      \ oneline
+      \ fold
+      \ display
+      \ extend
+      \ concealends
+      \ excludenl
+      \ keepend
+
+syn cluster testCluster
+      \ contains=testContained1,testContained2,testContained3
+
+syn cluster testCluster
+      \ add=testAdd
+      \ remove=testRemove
+
+
+" check multiline group list
+syn keyword testKeyword
+      \ nextgroup=
+      \ testNext , 
+      \ testNext2 , 
+      \ @testCluster 
+      \ skipwhite
+      \ keyword4
+      \ keyword5
+      \ keyword6
diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index d697538db6..edfef438c3 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -7,6 +7,7 @@
 " 	2023 Dec 06 by Vim Project (add missing assignment operators)
 " 	2023 Dec 10 by Vim Project (improve variable matching)
 " 	2023 Dec 21 by Vim Project (improve ex command matching)
+" 	2023 Dec 30 by Vim Project (:syntax improvements)
 " Version:	9.0-25
 " URL:	http://www.drchip.org/astronaut/vim/index.html#SYNTAX_VIM
 " Automatically generated keyword lists: {{{1
@@ -525,16 +526,22 @@ syn match	vimNormCmds contained	".*$"
 
 " Syntax: {{{2
 "=======
-syn match	vimGroupList	contained	"@\=[^ \t,]*"	contains=vimGroupSpecial,vimPatSep
-syn match	vimGroupList	contained	"@\=[^ \t,]*,"	nextgroup=vimGroupList contains=vimGroupSpecial,vimPatSep
-syn keyword	vimGroupSpecial	contained	ALL	ALLBUT	CONTAINED	TOP
+syn match	vimGroupList		contained	"@\=[^[:space:],]\+"	nextgroup=vimGroupListComma                 skipwhite skipnl
+syn match	vimGroupListContinue	contained	"\\"		nextgroup=vimGroupList	        skipwhite
+syn match	vimGroupListComma		contained	","		nextgroup=vimGroupList,vimGroupListContinue skipwhite skipnl
+syn keyword	vimGroupSpecial		contained	ALL	ALLBUT	CONTAINED	TOP
 if !exists("g:vimsyn_noerror") && !exists("g:vimsyn_novimsynerror")
  syn match	vimSynError	contained	"\i\+"
  syn match	vimSynError	contained	"\i\+="	nextgroup=vimGroupList
 endif
-syn match	vimSynContains	contained	"\<contain\(s\|edin\)="	nextgroup=vimGroupList
+syn match	vimSynContains	contained	"\<contain\(s\|edin\)="	nextgroup=vimGroupList,vimGroupListContinue skipwhite skipnl
 syn match	vimSynKeyContainedin	contained	"\<containedin="	nextgroup=vimGroupList
-syn match	vimSynNextgroup	contained	"nextgroup="	nextgroup=vimGroupList
+syn match	vimSynNextgroup	contained	"nextgroup="	nextgroup=vimGroupList,vimGroupListContinue skipwhite skipnl
+if has("conceal")
+ syn match	vimSynCchar	contained	"\<cchar="	nextgroup=vimSynCcharValue
+ syn match	vimSynCcharValue	contained	"\S"
+endif
+
 
 syn match	vimSyntax	"\<sy\%[ntax]\>"	contains=vimCommand skipwhite nextgroup=vimSynType,vimComment,vim9Comment
 syn match	vimAuSyntax	contained	"\s+sy\%[ntax]"	contains=vimCommand skipwhite nextgroup=vimSynType,vimComment,vim9Comment
@@ -552,7 +559,7 @@ syn keyword	vimSynType	contained	clear	skipwhite nextgroup=vimGroupList
 
 " Syntax: cluster {{{2
 syn keyword	vimSynType	contained	cluster	skipwhite nextgroup=vimClusterName
-syn region	vimClusterName	contained	matchgroup=vimGroupName start="\h\w*" skip="\\\\\|\\|" matchgroup=vimSep end="$\||" contains=vimGroupAdd,vimGroupRem,vimSynContains,vimSynError
+syn region	vimClusterName	contained	matchgroup=vimGroupName start="\h\w*" skip="\\\\\|\\\|\n\s*\\" matchgroup=vimSep end="$\||" contains=vimContinue,vimGroupAdd,vimGroupRem,vimSynContains,vimSynError
 syn match	vimGroupAdd	contained	"add="	nextgroup=vimGroupList
 syn match	vimGroupRem	contained	"remove="	nextgroup=vimGroupList
 syn cluster vimFuncBodyList add=vimSynType,vimGroupAdd,vimGroupRem
@@ -574,21 +581,17 @@ syn keyword	vimSynType	contained	include	skipwhite nextgroup=vimGroupList
 syn cluster vimFuncBodyList add=vimSynType
 
 " Syntax: keyword {{{2
-syn cluster	vimSynKeyGroup	contains=vimSynNextgroup,vimSynKeyOpt,vimSynKeyContainedin
+syn cluster	vimSynKeyGroup	contains=vimContinue,vimSynCchar,vimSynNextgroup,vimSynKeyOpt,vimSynKeyContainedin
 syn keyword	vimSynType	contained	keyword	skipwhite nextgroup=vimSynKeyRegion
-syn region	vimSynKeyRegion	contained oneline keepend	matchgroup=vimGroupName start="\h\w*" skip="\\\\\|\\|" matchgroup=vimSep end="|\|$" contains=@vimSynKeyGroup
+syn region	vimSynKeyRegion	contained         keepend	matchgroup=vimGroupName start="\h\w*" skip="\\\\\|\\|\|\n\s*\\" matchgroup=vimSep end="|\|$" contains=@vimSynKeyGroup
 syn match	vimSynKeyOpt	contained	"\%#=1\<\(conceal\|contained\|transparent\|skipempty\|skipwhite\|skipnl\)\>"
 syn cluster vimFuncBodyList add=vimSynType
 
 " Syntax: match {{{2
-syn cluster	vimSynMtchGroup	contains=vimMtchComment,vimSynContains,vimSynError,vimSynMtchOpt,vimSynNextgroup,vimSynRegPat,vimNotation,vim9Comment
+syn cluster	vimSynMtchGroup	contains=vimContinue,vimMtchComment,vimSynCchar,vimSynContains,vimSynError,vimSynMtchOpt,vimSynNextgroup,vimSynRegPat,vimNotation,vim9Comment
 syn keyword	vimSynType	contained	match	skipwhite nextgroup=vimSynMatchRegion
-syn region	vimSynMatchRegion	contained keepend	matchgroup=vimGroupName start="\h\w*" matchgroup=vimSep end="|\|$" contains=@vimSynMtchGroup
+syn region	vimSynMatchRegion	contained keepend	matchgroup=vimGroupName start="\h\w*" skip="\n\s*\\" matchgroup=vimSep end="|\|$" contains=@vimSynMtchGroup
 syn match	vimSynMtchOpt	contained	"\%#=1\<\(conceal\|transparent\|contained\|excludenl\|keepend\|skipempty\|skipwhite\|display\|extend\|skipnl\|fold\)\>"
-if has("conceal")
- syn match	vimSynMtchOpt	contained	"\<cchar="	nextgroup=vimSynMtchCchar
- syn match	vimSynMtchCchar	contained	"\S"
-endif
 syn cluster vimFuncBodyList add=vimSynMtchGroup
 
 " Syntax: off and on {{{2
@@ -596,13 +599,13 @@ syn keyword	vimSynType	contained	enable	list	manual	off	on	reset
 
 " Syntax: region {{{2
 syn cluster	vimSynRegPatGroup	contains=vimPatSep,vimNotPatSep,vimSynPatRange,vimSynNotPatRange,vimSubstSubstr,vimPatRegion,vimPatSepErr,vimNotation
-syn cluster	vimSynRegGroup	contains=vimSynContains,vimSynNextgroup,vimSynRegOpt,vimSynReg,vimSynMtchGrp
+syn cluster	vimSynRegGroup	contains=vimContinue,vimSynCchar,vimSynContains,vimSynNextgroup,vimSynRegOpt,vimSynReg,vimSynMtchGrp
 syn keyword	vimSynType	contained	region	skipwhite nextgroup=vimSynRegion
-syn region	vimSynRegion	contained keepend	matchgroup=vimGroupName start="\h\w*" skip="\\\\\|\\|" end="|\|$" contains=@vimSynRegGroup
+syn region	vimSynRegion	contained keepend	matchgroup=vimGroupName start="\h\w*" skip="\\\\\|\\\|\n\s*\\" end="|\|$" contains=@vimSynRegGroup
 syn match	vimSynRegOpt	contained	"\%#=1\<\(conceal\(ends\)\=\|transparent\|contained\|excludenl\|skipempty\|skipwhite\|display\|keepend\|oneline\|extend\|skipnl\|fold\)\>"
 syn match	vimSynReg	contained	"\(start\|skip\|end\)="he=e-1	nextgroup=vimSynRegPat
 syn match	vimSynMtchGrp	contained	"matchgroup="	nextgroup=vimGroup,vimHLGroup
-syn region	vimSynRegPat	contained extend	start="\z([-`~!@#$%^&*_=+;:'",./?]\)"  skip="\\\\\|\\\z1"  end="\z1"  contains=@vimSynRegPatGroup skipwhite nextgroup=vimSynPatMod,vimSynReg
+syn region	vimSynRegPat	contained extend	start="\z([-`~!@#$%^&*_=+;:'",./?]\)"  skip="\\\\\|\\\z1\|\n\s*\\"  end="\z1"  contains=@vimSynRegPatGroup skipwhite nextgroup=vimSynPatMod,vimSynReg
 syn match	vimSynPatMod	contained	"\%#=1\(hs\|ms\|me\|hs\|he\|rs\|re\)=[se]\([-+]\d\+\)\="
 syn match	vimSynPatMod	contained	"\%#=1\(hs\|ms\|me\|hs\|he\|rs\|re\)=[se]\([-+]\d\+\)\=," nextgroup=vimSynPatMod
 syn match	vimSynPatMod	contained	"lc=\d\+"
@@ -694,7 +697,8 @@ syn match	vimLineComment	+^[ \t:]*".*$+	contains=@vimCommentGroup,vimCommentStri
 syn match	vimLineComment	+^[ \t:]*"\("[^"]*"\|[^"]\)*$+	contains=@vimCommentGroup,vimCommentString,vimCommentTitle
 syn match	vim9LineComment	+^[ \t:]\+#.*$+	contains=@vimCommentGroup,vimCommentString,vimCommentTitle
 syn match	vimCommentTitle	'"\s*\%([sS]:\|\h\w*#\)\=\u\w*\(\s\+\u\w*\)*:'hs=s+1	contained contains=vimCommentTitleLeader,vimTodo,@vimCommentGroup
-syn match	vimContinue	"^\s*\\"
+" Note: Look-behind to work around nextgroup skipnl consuming leading whitespace and preventing a match
+syn match	vimContinue	"\%(^\s*\)\@32<=\\"
 syn region	vimString	start="^\s*\\\z(['"]\)" skip='\\\\\|\\\z1' end="\z1" oneline keepend contains=@vimStringGroup,vimContinue
 syn match	vimCommentTitleLeader	'"\s\+'ms=s+1	contained
 
@@ -955,6 +959,7 @@ if !exists("skip_vim_syntax_inits")
  hi def link vimFuncSID	Special
  hi def link vimFuncVar	Identifier
  hi def link vimGroupAdd	vimSynOption
+ hi def link vimGroupListContinue	vimContinue
  hi def link vimGroupName	vimGroup
  hi def link vimGroupRem	vimSynOption
  hi def link vimGroupSpecial	Special
@@ -1050,6 +1055,8 @@ if !exists("skip_vim_syntax_inits")
  hi def link vimSynFoldMethod	Type
  hi def link vimSynKeyContainedin	vimSynContains
  hi def link vimSynKeyOpt	vimSynOption
+ hi def link vimSynCchar	vimSynOption
+ hi def link vimSynCcharValue	Character
  hi def link vimSynMtchGrp	vimSynOption
  hi def link vimSynMtchOpt	vimSynOption
  hi def link vimSynNextgroup	vimSynOption