runtime(vim): Update base-syntax, improve :echo highlighting (#14103)

- Normalise behaviour of :echo commands and improve expression matching.
- Allow continued argument lines.
- Refine string interpolation groups.
- Remove duplicated :menu and :map generated commands that are handled
  specially later in the file.

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

3 files changed, 60 insertions, 0 deletions

diff --git a/runtime/syntax/testdir/dumps/vim_ex_echo_00.dump b/runtime/syntax/testdir/dumps/vim_ex_echo_00.dump
new file mode 100644
index 0000000000..506c9e2d87
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_echo_00.dump
@@ -0,0 +1,20 @@
+>"+0#0000e05#ffffff0| |V|i|m| |:|e|c|h|o| |c|o|m@1|a|n|d|s| +0#0000000&@54
+@75
+|e+0#af5f00255&|c|h|o| +0#0000000&@7|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+|e+0#af5f00255&|c|h|o|n| +0#0000000&@6|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+|e+0#af5f00255&|c|h|o|m|s|g| +0#0000000&@4|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+|e+0#af5f00255&|c|h|o|w|i|n|d|o|w| +0#0000000&@1|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+|e+0#af5f00255&|c|h|o|e|r@1| +0#0000000&@4|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+|e+0#af5f00255&|c|h|o|c|o|n|s|o|l|e| +0#0000000&|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+@75
+|e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|f|o|l@1|o|w|i|n|g| |c|o|m@1|a|n|d| |i|s| |:|||"| +0#0000000&||| ||| @40
+@75
+|e+0#af5f00255&|c|h|o|h|l| +0#0000000&|W+0#00e0003&|a|r|n|i|n|g|M|s|g| +0#0000000&||| |e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|D|o|n|'|t| |p|a|n|i|c|!|"| +0#0000000&||| |e+0#af5f00255&|c|h|o|h|l| +0#0000000&|N+0#00e0003&|o|n|e| +0#0000000&@21
+@75
+|e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&@58
+@5|"+0#0000e05&|\| |c|o|m@1|e|n|t| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|4+0#e000002&|2| +0#0000000&@64
+@75
+|"+0#0000e05&| |:|e|c|h|o| |w|i|t|h|o|u|t| |{|e|x|p|r|}| +0#0000000&@52
+|e+0#af5f00255&|c|h|o||+0#0000000&| |e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|F|o@1|"| +0#0000000&@58
+|"|i|n|p|u|t|/|v|i|m|_|e|x|_|e|c|h|o|.|v|i|m|"| |2|0|L|,| |3|6|2|B| @23|1|,|1| @10|T|o|p| 
diff --git a/runtime/syntax/testdir/dumps/vim_ex_echo_99.dump b/runtime/syntax/testdir/dumps/vim_ex_echo_99.dump
new file mode 100644
index 0000000000..e8dd4541bc
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim_ex_echo_99.dump
@@ -0,0 +1,20 @@
+| +0&#ffffff0@74
+|e+0#af5f00255&|c|h|o| +0#0000000&@7|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+|e+0#af5f00255&|c|h|o|n| +0#0000000&@6|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+|e+0#af5f00255&|c|h|o|m|s|g| +0#0000000&@4|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+|e+0#af5f00255&|c|h|o|w|i|n|d|o|w| +0#0000000&@1|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+|e+0#af5f00255&|c|h|o|e|r@1| +0#0000000&@4|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+|e+0#af5f00255&|c|h|o|c|o|n|s|o|l|e| +0#0000000&|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&|4+0#e000002&|2| +0#0000000&@48
+@75
+|e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|f|o|l@1|o|w|i|n|g| |c|o|m@1|a|n|d| |i|s| |:|||"| +0#0000000&||| ||| @40
+@75
+|e+0#af5f00255&|c|h|o|h|l| +0#0000000&|W+0#00e0003&|a|r|n|i|n|g|M|s|g| +0#0000000&||| |e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|D|o|n|'|t| |p|a|n|i|c|!|"| +0#0000000&||| |e+0#af5f00255&|c|h|o|h|l| +0#0000000&|N+0#00e0003&|o|n|e| +0#0000000&@21
+@75
+|e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|A|n|s|w|e|r| |=| |"| +0#0000000&@58
+@5|"+0#0000e05&|\| |c|o|m@1|e|n|t| +0#0000000&@59
+@6|\+0#e000e06&| +0#0000000&|4+0#e000002&|2| +0#0000000&@64
+@75
+|"+0#0000e05&| |:|e|c|h|o| |w|i|t|h|o|u|t| |{|e|x|p|r|}| +0#0000000&@52
+|e+0#af5f00255&|c|h|o||+0#0000000&| |e+0#af5f00255&|c|h|o| +0#0000000&|"+0#e000002&|F|o@1|"| +0#0000000&@58
+> @74
+@57|2|0|,|0|-|1| @7|B|o|t| 
diff --git a/runtime/syntax/testdir/input/vim_ex_echo.vim b/runtime/syntax/testdir/input/vim_ex_echo.vim
new file mode 100644
index 0000000000..c031724b8a
--- /dev/null
+++ b/runtime/syntax/testdir/input/vim_ex_echo.vim
@@ -0,0 +1,20 @@
+" Vim :echo commands
+
+echo        "Answer = " 42
+echon       "Answer = " 42
+echomsg     "Answer = " 42
+echowindow  "Answer = " 42
+echoerr     "Answer = " 42
+echoconsole "Answer = " 42
+
+echo "following command is :|" | |
+
+echohl WarningMsg | echo "Don't panic!" | echohl None
+
+echo "Answer = "
+     "\ comment
+      \ 42
+
+" :echo without {expr}
+echo| echo "Foo"
+