Commit: runtime(sshconfig,sshdconfig): update syntax (#14351)

[Christian Brabandt]

runtime(sshconfig,sshdconfig): update syntax (#14351)

Commit: https://github.com/vim/vim/commit/cbb92b5ceb6a8169b6eddceec3837aac02f21e3b
Author: Eisuke Kawashima <e-k...@users.noreply.github.com>
Date: Mon Apr 1 05:02:31 2024 +0900

runtime(sshconfig,sshdconfig): update syntax (https://github.com/vim/vim/issues/14351)

* fix case insensitivity of Host and Hostname keys
* improve regexps
* add keywords

Signed-off-by: Eisuke Kawashima <e-k...@users.noreply.github.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/syntax/sshconfig.vim b/runtime/syntax/sshconfig.vim
index 750289d83..99e10fd1e 100644
--- a/runtime/syntax/sshconfig.vim
+++ b/runtime/syntax/sshconfig.vim
@@ -63,8 +63,7 @@ syn keyword sshconfigMAC hmac-sha2-256
syn keyword sshconfigMAC hmac-sha2-512
syn keyword sshconfigMAC hmac-md5
syn keyword sshconfigMAC hmac-md5-96
-syn keyword sshconfigMAC hmac-ripemd160
-syn match sshconfigMAC "\<hmac-ripemd160@openssh\.com\>"
+syn match sshconfigMAC "\<hmac-ripemd160\%(@openssh\.com\)\?\>"
syn match sshconfigMAC "\<umac-64@openssh\.com\>"
syn match sshconfigMAC "\<umac-128@openssh\.com\>"
syn match sshconfigMAC "\<hmac-sha1-etm@openssh\.com\>"
@@ -107,33 +106,35 @@ syn keyword sshconfigSysLogFacility DAEMON USER AUTH AUTHPRIV LOCAL0 LOCAL1
syn keyword sshconfigSysLogFacility LOCAL2 LOCAL3 LOCAL4 LOCAL5 LOCAL6 LOCAL7
syn keyword sshconfigAddressFamily inet inet6

-syn match sshconfigIPQoS "af1[123]"
-syn match sshconfigIPQoS "af2[123]"
-syn match sshconfigIPQoS "af3[123]"
-syn match sshconfigIPQoS "af4[123]"
-syn match sshconfigIPQoS "cs[0-7]"
-syn keyword sshconfigIPQoS ef lowdelay throughput reliability
+syn match sshconfigIPQoS "\<af[1-4][1-3]\>"
+syn match sshconfigIPQoS "\<cs[0-7]\>"
+syn keyword sshconfigIPQoS ef le lowdelay throughput reliability
syn keyword sshconfigKbdInteractive bsdauth pam skey

syn keyword sshconfigKexAlgo diffie-hellman-group1-sha1
syn keyword sshconfigKexAlgo diffie-hellman-group14-sha1
syn keyword sshconfigKexAlgo diffie-hellman-group-exchange-sha1
syn keyword sshconfigKexAlgo diffie-hellman-group-exchange-sha256
+syn keyword sshconfigKexAlgo diffie-hellman-group16-sha512
+syn keyword sshconfigKexAlgo diffie-hellman-group18-sha512
+syn keyword sshconfigKexAlgo diffie-hellman-group14-sha256
syn keyword sshconfigKexAlgo ecdh-sha2-nistp256
syn keyword sshconfigKexAlgo ecdh-sha2-nistp384
syn keyword sshconfigKexAlgo ecdh-sha2-nistp521
-syn match sshconfigKexAlgo "\<curve25519-sha256@libssh\.org\>"
+syn match sshconfigKexAlgo "\<curve25519-sha256\%(@libssh\.org\)\?\>"
+syn match sshconfigKexAlgo "\<sntrup761x25519-sha512@openssh\.com\>"

syn keyword sshconfigTunnel point-to-point ethernet

-syn match sshconfigVar "%[rhplLdun]\>"
+syn match sshconfigVar "%[CdfHhIijKkLlnprTtu]\>"
+syn match sshconfigVar "%%"
syn match sshconfigSpecial "[*?]"
-syn match sshconfigNumber "\d\+"
+syn match sshconfigNumber "\<\d\+\>"
syn match sshconfigHostPort "\<\(\d\{1,3}\.\)\{3}\d\{1,3}\(:\d\+\)\?\>"
syn match sshconfigHostPort "\<\([-a-zA-Z0-9]\+\.\)\+[-a-zA-Z0-9]\{2,}\(:\d\+\)\?\>"
syn match sshconfigHostPort "\<\(\x\{,4}:\)\+\x\{,4}[:/]\d\+\>"
-syn match sshconfigHostPort "\(Host \)\@<=.\+"
-syn match sshconfigHostPort "\(HostName \)\@<=.\+"
+syn match sshconfigHostPort "\<