Basic match support

See vim-python#80 (comment)

match.patch

@@ -0,0 +1,30 @@
+diff --git a/syntax/python.vim b/syntax/python.vim
+index 2524aba..3d49f51 100644
+--- a/syntax/python.vim
++++ b/syntax/python.vim
+@@ -81,6 +81,7 @@ if s:Enabled('g:python_highlight_class_vars')
+ endif
+ syn keyword pythonRepeat        for while
+ syn keyword pythonConditional   if elif else
++syn keyword pythonMatch         match case
+ syn keyword pythonException     try except finally
+ " The standard pyrex.vim unconditionally removes the pythonInclude group, so
+ " we provide a dummy group here to avoid crashing pyrex.vim.
+@@ -105,7 +106,7 @@ else
+     syn match   pythonStatement   '\<async\s\+def\>' nextgroup=pythonFunction skipwhite
+     syn match   pythonStatement   '\<async\s\+with\>'
+     syn match   pythonStatement   '\<async\s\+for\>'
+-    syn cluster pythonExpression contains=pythonStatement,pythonRepeat,pythonConditional,pythonOperator,pythonNumber,pythonHexNumber,pythonOctNumber,pythonBinNumber,pythonFloat,pythonString,pythonFString,pythonRawString,pythonRawFString,pythonBytes,pythonBoolean,pythonNone,pythonSingleton,pythonBuiltinObj,pythonBuiltinFunc,pythonBuiltinType,pythonClassVar
++    syn cluster pythonExpression contains=pythonStatement,pythonRepeat,pythonConditional,pythonMatch,pythonOperator,pythonNumber,pythonHexNumber,pythonOctNumber,pythonBinNumber,pythonFloat,pythonString,pythonFString,pythonRawString,pythonRawFString,pythonBytes,pythonBoolean,pythonNone,pythonSingleton,pythonBuiltinObj,pythonBuiltinFunc,pythonBuiltinType,pythonClassVar
+ endif
+
+
+@@ -434,6 +435,7 @@ if v:version >= 508 || !exists('did_python_syn_inits')
+     HiLink pythonFunction         Function
+     HiLink pythonFunctionCall     Function
+     HiLink pythonConditional      Conditional
++    HiLink pythonMatch            Conditional
+     HiLink pythonRepeat           Repeat
+     HiLink pythonException        Exception
+     HiLink pythonOperator         Operator
+

syntax/python.vim

@@ -81,6 +81,7 @@ if s:Enabled('g:python_highlight_class_vars')
 endif
 syn keyword pythonRepeat        for while
 syn keyword pythonConditional   if elif else
+syn keyword pythonMatch         match case
 syn keyword pythonException     try except finally
 " The standard pyrex.vim unconditionally removes the pythonInclude group, so
 " we provide a dummy group here to avoid crashing pyrex.vim.
@@ -105,7 +106,7 @@ else
     syn match   pythonStatement   '\<async\s\+def\>' nextgroup=pythonFunction skipwhite
     syn match   pythonStatement   '\<async\s\+with\>'
     syn match   pythonStatement   '\<async\s\+for\>'
-    syn cluster pythonExpression contains=pythonStatement,pythonRepeat,pythonConditional,pythonOperator,pythonNumber,pythonHexNumber,pythonOctNumber,pythonBinNumber,pythonFloat,pythonString,pythonFString,pythonRawString,pythonRawFString,pythonBytes,pythonBoolean,pythonNone,pythonSingleton,pythonBuiltinObj,pythonBuiltinFunc,pythonBuiltinType,pythonClassVar
+    syn cluster pythonExpression contains=pythonStatement,pythonRepeat,pythonConditional,pythonMatch,pythonOperator,pythonNumber,pythonHexNumber,pythonOctNumber,pythonBinNumber,pythonFloat,pythonString,pythonFString,pythonRawString,pythonRawFString,pythonBytes,pythonBoolean,pythonNone,pythonSingleton,pythonBuiltinObj,pythonBuiltinFunc,pythonBuiltinType,pythonClassVar
 endif
 
 
@@ -434,6 +435,7 @@ if v:version >= 508 || !exists('did_python_syn_inits')
     HiLink pythonFunction         Function
     HiLink pythonFunctionCall     Function
     HiLink pythonConditional      Conditional
+    HiLink pythonMatch            Conditional
     HiLink pythonRepeat           Repeat
     HiLink pythonException        Exception
     HiLink pythonOperator         Operator