runtime(vim): Update base syntax, match generic functions

Match Vim9 generic functions, added in #17313.

closes: #17722

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

diff --git a/runtime/syntax/generator/vim.vim.base b/runtime/syntax/generator/vim.vim.base
index 63c1bb5c91b5f7555426f72d138b774285cb5b89..7a3e459059db9a9ff581faf2814c001254fcd089 100644 (file)
--- a/runtime/syntax/generator/vim.vim.base
+++ b/runtime/syntax/generator/vim.vim.base
@@ -2,7 +2,7 @@
 " Language:       Vim script
 " Maintainer:     Hirohito Higashi <h.east.727 ATMARK gmail.com>
 "         Doug Kearns <dougkearns@gmail.com>
-" Last Change:    2025 Jul 18
+" Last Change:    2025 Jul 23
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -267,6 +267,8 @@ syn match vimVimVar "\<v:"          nextgroup=vimSubscript,vimVimVarName,vimVarNameError
 syn match vimOptionVar "&\%([lg]:\)\="         nextgroup=vimSubscript,vimOptionVarName,vimVarNameError
 syn cluster vimSpecialVar      contains=vimEnvvar,vimLetRegister,vimOptionVar,vimVimVar
 
+Vim9 syn match vimVar  contained        "\<\h\w*\ze<"          nextgroup=vim9TypeArgs
+
 Vim9 syn match vim9LhsVariable "\s\=\h[a-zA-Z0-9#_]*\ze\s\+[-+/*%]\=="
 Vim9 syn match vim9LhsVariable "\s\=\h[a-zA-Z0-9#_]*\ze\s\+\.\.="
 Vim9 syn match vim9LhsVariable "\s\=\%([bwgt]:\)\=\h[a-zA-Z0-9#_]*\ze\s\+=<<"  skipwhite nextgroup=vimLetHeredoc       contains=vimVarScope
@@ -468,7 +470,7 @@ syn match   vimFunctionName contained
       \ contains=vimFunctionError,vimFunctionScope,vimFunctionSID,Tag
 syn match      vimDefName      contained
       \ "\%(<[sS][iI][dD]>\|[bwglstav]:\)\=\%([[:alnum:]_#.]\+\|{.\{-1,}}\)\+"
-      \ nextgroup=vimDefParams,vimCmdSep,vimComment,vim9Comment
+      \ nextgroup=vimDefTypeParams,vimDefParams,vimCmdSep,vimComment,vim9Comment
       \ contains=vimFunctionError,vimFunctionScope,vimFunctionSID,Tag
 
 syn match      vimFunction     "\<fu\%[nction]\>"      skipwhite nextgroup=vimFunctionBang,vimFunctionName,vimFunctionPattern,vimCmdSep,vimComment
@@ -498,8 +500,15 @@ syn region vimDefParams    contained
       \ end=")"
       \ skipwhite skipempty nextgroup=vimDefBody,vimDefComment,vimEnddef,vimReturnType,vimCommentError
       \ contains=vimDefParam,vim9Comment,vimFunctionParamEquals,vimOperParen
+syn region     vimDefTypeParams        contained
+      \ matchgroup=Delimiter
+      \ start="<"
+      \ end=">"
+      \ nextgroup=vimDefParams
+      \ contains=vim9DefTypeParam
 syn match      vimFunctionParam        contained       "\<\h\w*\>\|\.\.\."     skipwhite nextgroup=vimFunctionParamEquals
 syn match      vimDefParam     contained       "\<\h\w*\>"             skipwhite nextgroup=vimParamType,vimFunctionParamEquals
+syn match      vim9DefTypeParam        contained       "\<\u\w*\>"
 
 syn match      vimFunctionParamEquals contained        "="                     skipwhite         nextgroup=@vimExprList
 syn match      vimFunctionMod       contained  "\<\%(abort\|closure\|dict\|range\)\>"  skipwhite skipempty nextgroup=vimFunctionBody,vimFunctionComment,vimEndfunction,vimFunctionMod,vim9CommentError
@@ -531,7 +540,7 @@ if exists("g:vimsyn_folding") && g:vimsyn_folding =~# 'f'
   syn region   vimDefFold
         \ start="\<def!"
         "\ assume no dict literal in curly-brace name expressions
-        \ start="\<def\>\s*\%([[:alnum:]_:<>.#]\+\|{.\{-1,}}\)\+("
+        \ start="\<def\>\s*\%([[:alnum:]_:<>.#]\+\|{.\{-1,}}\)\+[<(]"
         \ end="^\s*:\=\s*enddef\>"
         \ contains=vimDef
         \ extend fold keepend transparent
@@ -573,14 +582,20 @@ if s:vim9script
 
   " Methods {{{3
   syn match    vim9MethodDef           contained       "\<def\>"       skipwhite nextgroup=vim9MethodDefName,vim9ConstructorDefName
-  syn match    vim9MethodDefName               contained       "\<\h\w*\>"     nextgroup=vim9MethodDefParams contains=@vim9MethodName
+  syn match    vim9MethodDefName               contained       "\<\h\w*\>"     nextgroup=vim9MethodDefParams,vim9MethodDefTypeParams contains=@vim9MethodName
   syn region   vim9MethodDefParams     contained
         \ matchgroup=Delimiter start="(" end=")"
         \ skipwhite skipnl nextgroup=vim9MethodDefBody,vim9MethodDefComment,vimEnddef,vim9MethodDefReturnType,vimCommentError
         \ contains=vimDefParam,vim9Comment,vimFunctionParamEquals
+  syn region   vim9MethodDefTypeParams contained
+        \ matchgroup=Delimiter
+        \ start="<"
+        \ end=">"
+        \ nextgroup=vim9MethodDefParams
+        \ contains=vim9DefTypeParam
 
   syn match    vim9ConstructorDefName  contained       "\<_\=new\w*\>"
-        \ nextgroup=vim9ConstructorDefParams
+        \ nextgroup=vim9ConstructorDefParams,vim9ConstuctorDefTypeParams
         \ contains=@vim9MethodName
   syn match    vim9ConstructorDefParam contained       "\<\%(this\.\)\=\h\w*\>"
         \ skipwhite nextgroup=vimParamType,vimFunctionParamEquals
@@ -589,6 +604,12 @@ if s:vim9script
         \ matchgroup=Delimiter start="(" end=")"
         \ skipwhite skipnl nextgroup=vim9MethodDefBody,vim9MethodDefComment,vimEnddef,vimCommentError
         \ contains=vim9ConstructorDefParam,vim9Comment,vimFunctionParamEquals
+  syn region   vim9ConstuctorDefTypeParams     contained
+        \ matchgroup=Delimiter
+        \ start="<"
+        \ end=">"
+        \ nextgroup=vim9ConstructorDefParams
+        \ contains=vim9DefTypeParam
 
   syn region   vim9MethodDefReturnType contained
         \ start=":\%(\s\|\n\)\@="
@@ -622,8 +643,11 @@ if s:vim9script
   syn cluster  vim9MethodName  contains=vim9MethodName,vim9MethodNameError
 
   if exists("g:vimsyn_folding") && g:vimsyn_folding =~# 'f'
-    syn region vim9MethodDefFold       contained       start="\%(^\s*\%(:\=static\s\+\)\=\)\@16<=:\=def\s\+\h\i*(" end="^\s*:\=enddef\>" contains=vim9MethodDef fold keepend extend transparent
-    syn region vim9MethodDefFold       contained       start="^\s*:\=def\s\+_\=new\i*("                      end="^\s*:\=enddef\>" contains=vim9MethodDef fold keepend extend transparent
+    syn region vim9MethodDefFold       contained
+          \ start="\%(^\s*\%(:\=static\s\+\)\=\)\@16<=:\=def\s\+\h\w*[<(]"
+          \ end="^\s*:\=enddef\>"
+          \ contains=vim9MethodDef
+          \ fold keepend extend transparent
   endif
 
   syn cluster vim9MethodDef contains=vim9MethodDef,vim9MethodDefFold
@@ -703,7 +727,7 @@ if s:vim9script
   syn match    vim9InterfaceName               contained       "\<\u\w*\>"     skipwhite skipnl nextgroup=vim9Extends
 
   syn keyword  vim9AbstractDef         contained       def     skipwhite nextgroup=vim9AbstractDefName
-  syn match    vim9AbstractDefName     contained       "\<\h\w*\>"     skipwhite nextgroup=vim9AbstractDefParams contains=@vim9MethodName
+  syn match    vim9AbstractDefName     contained       "\<\h\w*\>"     skipwhite nextgroup=vim9AbstractDefParams,vim9AbstractDefTypeParams contains=@vim9MethodName
   syn region   vim9AbstractDefParams   contained
         \ matchgroup=Delimiter start="(" end=")"
         \ skipwhite skipnl nextgroup=vimDefComment,vim9AbstractDefReturnType,vimCommentError
@@ -713,6 +737,12 @@ if s:vim9script
         \ skipwhite skipnl nextgroup=vimDefComment,vimCommentError
         \ contains=vimTypeSep
         \ transparent
+  syn region   vim9AbstractDefTypeParams       contained
+        \ matchgroup=Delimiter
+        \ start="<"
+        \ end=">"
+        \ nextgroup=vim9AbstractDefParams
+        \ contains=vim9DefTypeParam
 
   VimFoldi syn region  vim9InterfaceBody       start="\<interface\>" matchgroup=vimCommand end="\<endinterface\>" contains=@vim9InterfaceBodyList transparent
 
@@ -1431,7 +1461,7 @@ syn match vimBracket contained    "[\\<>]"
 syn case match
 
 " User Command Highlighting: {{{2
-syn match vimUsrCmd    '^\s*\zs\u\%(\w*\)\@>\%([.(#[]\|\s\+\%([-+*/%]\=\|\.\.\)=\)\@!'
+syn match vimUsrCmd    '^\s*\zs\u\%(\w*\)\@>\%([<.(#[]\|\s\+\%([-+*/%]\=\|\.\.\)=\)\@!'
 
 " Vim user commands
 
@@ -2088,18 +2118,26 @@ unlet s:interfaces
 " Function Call Highlighting: {{{2
 " (following Gautam Iyer's suggestion)
 " ==========================
-syn match      vimFunc contained       "\<\l\w*\ze\s*("                                skipwhite nextgroup=vimOperParen contains=vimFuncName
-syn match      vimUserFunc     contained       "\.\@1<=\l\w*\ze\s*("                   skipwhite nextgroup=vimOperParen
-syn match      vimUserFunc     contained       "\<\%([[:upper:]_]\|\%(\h\w*\.\)\+\h\)\w*\ze\s*("               skipwhite nextgroup=vimOperParen contains=vim9MethodName,vim9Super,vim9This
-syn match      vimUserFunc     contained       "\<\%(g:\)\=\%(\h\w*#\)\+\h\w*\ze\s*("          skipwhite nextgroup=vimOperParen contains=vimVarScope
-syn match      vimUserFunc     contained       "\%(\<[sgbwtlav]:\|<[sS][iI][dD]>\)\%(\h\w*\.\)*\h\w*\ze\s*("   skipwhite nextgroup=vimOperParen contains=vimVarScope,vimNotation
+syn match      vimFunc contained       "\<\l\w*\ze\s*("                                        skipwhite nextgroup=vimOperParen                contains=vimFuncName
+syn match      vimUserFunc     contained       "\.\@1<=\l\w*\ze\%(\s*(\|<.*>(\)"                               skipwhite nextgroup=vimOperParen,vim9TypeArgs
+syn match      vimUserFunc     contained       "\<\%([[:upper:]_]\|\%(\h\w*\.\)\+\h\)\w*\ze\%(\s*(\|<.*>(\)"           skipwhite nextgroup=vimOperParen,vim9TypeArgs   contains=vim9MethodName,vim9Super,vim9This
+syn match      vimUserFunc     contained       "\<\%(g:\)\=\%(\h\w*#\)\+\h\w*\ze\%(\s*(\|<.*>(\)"                      skipwhite nextgroup=vimOperParen                contains=vimVarScope
+syn match      vimUserFunc     contained       "\%(\<[sgbwtlav]:\|<[sS][iI][dD]>\)\%(\h\w*\.\)*\h\w*\ze\%(\s*(\|<.*>(\)"       skipwhite nextgroup=vimOperParen,vim9TypeArgs   contains=vimVarScope,vimNotation
 
-Vim9 syn match vim9UserFunc    "^\s*\zs\%([sgbwtv]:\|<[sS][iI][dD]>\)\=\%(\h\w*[.#]\)*\h\w*\ze("               skipwhite nextgroup=vimOperParen contains=vimVarScope,vimNotation,vim9MethodName,vim9Super,vim9This
-Vim9 syn match vim9Func        "^\s*\zs\l\w*\ze("                              skipwhite nextgroup=vimOperParen contains=vimFuncName
+Vim9 syn match vim9UserFunc    "^\s*\zs\%([sgbwtv]:\|<[sS][iI][dD]>\)\=\%(\h\w*[.#]\)*\h\w*\ze[<(]"                    skipwhite nextgroup=vimOperParen,vim9TypeArgs   contains=vimVarScope,vimNotation,vim9MethodName,vim9Super,vim9This
+Vim9 syn match vim9Func        "^\s*\zs\l\w*\ze("                                      skipwhite nextgroup=vimOperParen                contains=vimFuncName
 
 syn cluster    vimFunc contains=vimFunc,vimUserFunc
 syn cluster    vim9Func        contains=vim9Func,vim9UserFunc
 
+syn region     vim9TypeArgs    contained
+      \ matchgroup=Delimiter
+      \ start="<\ze\a"
+      \ end=">"
+      \ nextgroup=vimOperParen
+      \ contains=@vimType
+      \ oneline
+
 " Beginners - Patterns that involve ^ {{{2
 " =========
 Vim9 syn region        vim9LineComment start=+^[ \t:]*\zs#.*$+ skip=+\n\s*\\\|\n\s*#\\ + end="$" contains=@vimCommentGroup,vimCommentString,vim9CommentTitle extend

diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_00.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_00.dump
new file mode 100644 (file)
index 0000000..644b3e5
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_00.dump
@@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1>v+0#af5f00255#ffffff0|i|m|9|s|c|r|i|p|t| +0#0000000&@62
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |V|I|M|_|T|E|S|T|_|S|E|T|U|P| |h|i|g|h|l|i|g|h|t| |l|i|n|k| |v|i|m|9|D|e|f|T|y|p|e|P|a|r|a|m| |T|o|d|o| +0#0000000&@19
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |V|I|M|_|T|E|S|T|_|S|E|T|U|P| |l|e|t| |g|:|v|i|m|s|y|n|_|f|o|l|d|i|n|g| |=| |"+0#e000002&|f|"| +0#0000000&@29
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |V|I|M|_|T|E|S|T|_|S|E|T|U|P| |s|e|t|l| |f|d|c|=|2| |f|d|l|=|9@1| |f|d|m|=|s|y|n|t|a|x| +0#0000000&@27
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| +0#0000000&|S+0#e000e06&|e@1|:| +0#0000e05&|h|t@1|p|s|:|/@1|g|i|t|h|u|b|.|c|o|m|/|v|i|m|/|v|i|m|/|p|u|l@1|/|1|7|3|1|3|#|i|s@1|u|e|c|o|m@1|e|n|t|-|3|0|4|6@1|9|6|8|2|0| |(|A|l|i
+| +0&#a8a8a8255@1|a+0&#ffffff0|k|s|e|i| |B|u|d|a|v|e|i|)| +0#0000000&@58
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| |S|e@1| |h|t@1|p|s|:|/@1|g|i|t|h|u|b|.|c|o|m|/|v|i|m|/|v|i|m|/|p|u|l@1|/|1|6@1|0|4|#|i|s@1|u|e|c|o|m@1|e|n|t|-|2|6|5|2|0|2|8|4|5| |.| +0#0000000&@4
+| +0#0000e05#a8a8a8255@1|e+0#af5f00255#ffffff0|x|p|o|r|t| +0#0000000&|i+0#af5f00255&|n|t|e|r|f|a|c|e| +0#0000000&|L|i|s|t|a|b|l|e| @47
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|C|o|n|s|<+0#e000e06&|E+0#0000001#ffff4012|>+0#e000e06#ffffff0|(|_+0#0000000&|:| |E|)+0#e000e06&|:+0#0000000&| |L|i|s|t|a|b|l|e| @41
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|R|e|v|e|r|s|e|<+0#e000e06&|E+0#0000001#ffff4012|>+0#e000e06#ffffff0|(|)|:+0#0000000&| |L|i|s|t|a|b|l|e| @42
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|R|e|s|t|(+0#e000e06&|)|:+0#0000000&| |L|i|s|t|a|b|l|e| @48
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|F|i|r|s|t|<+0#e000e06&|E+0#0000001#ffff4012|>+0#e000e06#ffffff0|(|)|:+0#0000000&| |E| @51
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|e+0#00e0e07&|m|p|t|y|(+0#e000e06&|)|:+0#0000000&| |b+0#00e0003&|o@1|l| +0#0000000&@51
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|l+0#00e0e07&|e|n|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@51
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|s+0#00e0e07&|t|r|i|n|g|(+0#e000e06&|)|:+0#0000000&| |s+0#00e0003&|t|r|i|n|g| +0#0000000&@48
+| +0#0000e05#a8a8a8255@1|e+0#af5f00255#ffffff0|n|d|i|n|t|e|r|f|a|c|e| +0#0000000&@60
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+@57|1|,|1| @10|T|o|p| 

diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_01.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_01.dump
new file mode 100644 (file)
index 0000000..40b7f99
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_01.dump
@@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|F|i|r|s|t|<+0#e000e06&|E+0#0000001#ffff4012|>+0#e000e06#ffffff0|(|)|:+0#0000000&| |E| @51
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|e+0#00e0e07&|m|p|t|y|(+0#e000e06&|)|:+0#0000000&| |b+0#00e0003&|o@1|l| +0#0000000&@51
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|l+0#00e0e07&|e|n|(+0#e000e06&|)|:+0#0000000&| |n+0#00e0003&|u|m|b|e|r| +0#0000000&@51
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|s+0#00e0e07&|t|r|i|n|g|(+0#e000e06&|)|:+0#0000000&| |s+0#00e0003&|t|r|i|n|g| +0#0000000&@48
+| +0#0000e05#a8a8a8255@1|e+0#af5f00255#ffffff0|n|d|i|n|t|e|r|f|a|c|e| +0#0000000&@60
+| +0#0000e05#a8a8a8255@1> +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|e+0#af5f00255#ffffff0|n|u|m| +0#0000000&|E|m|p|t|y|L|i|s|t| |i+0#af5f00255&|m|p|l|e|m|e|n|t|s| +0#0000000&|L|i|s|t|a|b|l|e| @38
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|I|N|S|T|A|N|C|E| @60
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|C|o|n|s|<+0#e000e06&|E+0#0000001#ffff4012|>+0#e000e06#ffffff0|(|v+0#0000000&|a|l|u|e|:| |E|)+0#e000e06&|:+0#0000000&| |L|i|s|t|a|b|l|e| @37
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|L|i|s|t|.|n+0#00e0e07&|e|w|<+0#e000e06&|E+0#0000000&|>+0#e000e06&|(|v+0#0000000&|a|l|u|e|)+0#e000e06&| +0#0000000&@39
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@62
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|R|e|v|e|r|s|e|<+0#e000e06&|E+0#0000001#ffff4012|>+0#e000e06#ffffff0|(|)|:+0#0000000&| |L|i|s|t|a|b|l|e| @42
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|t+0#00e0e07&|h|i|s| +0#0000000&@53
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@62
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|R|e|s|t|(+0#e000e06&|)|:+0#0000000&| |L|i|s|t|a|b|l|e| @48
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|t+0#00e0e07&|h|i|s| +0#0000000&@53
+@57|1|8|,|0|-|1| @8|6|%| 

diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_02.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_02.dump
new file mode 100644 (file)
index 0000000..b797ebf
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_02.dump
@@ -0,0 +1,20 @@
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|t+0#00e0e07&|h|i|s| +0#0000000&@53
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|e+0#af5f00255&|n|d@1|e|f| +0#0000000&@62
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|d+0#af5f00255&|e|f| +0#0000000&|F|i|r|s|t|<+0#e000e06&|E+0#0000001#ffff4012|>+0#e000e06#ffffff0|(|)|:+0#0000000&| |E| @51
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@7|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|n+0#e000002&|u|l@1| +0#0000000&@53
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3>e+0#af5f00255&|n|d@1|e|f| +0#0000000&@62
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_03.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_03.dump
new file mode 100644 (file)
index 0000000..48b0229
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_03.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_04.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_04.dump
new file mode 100644 (file)
index 0000000..7f11c19
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_04.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_05.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_05.dump
new file mode 100644 (file)
index 0000000..369255c
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_05.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_06.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_06.dump
new file mode 100644 (file)
index 0000000..2736cf1
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_06.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_07.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_07.dump
new file mode 100644 (file)
index 0000000..881fb09
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_07.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_08.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_08.dump
new file mode 100644 (file)
index 0000000..c243859
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_08.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_09.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_09.dump
new file mode 100644 (file)
index 0000000..4e41855
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_10.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_10.dump
new file mode 100644 (file)
index 0000000..ffda6f9
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+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_10.dump
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_11.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_11.dump
new file mode 100644 (file)
index 0000000..5a6e030
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+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_11.dump
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_12.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_list_12.dump
new file mode 100644 (file)
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_00.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_00.dump
new file mode 100644 (file)
index 0000000..0098b22
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_01.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_01.dump
new file mode 100644 (file)
index 0000000..3702406
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_02.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_02.dump
new file mode 100644 (file)
index 0000000..7521112
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_02.dump
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_03.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_03.dump
new file mode 100644 (file)
index 0000000..6ded4fe
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_03.dump
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_04.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_04.dump
new file mode 100644 (file)
index 0000000..7c473d8
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+++ b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_04.dump
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_05.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_05.dump
new file mode 100644 (file)
index 0000000..cd34d74
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_06.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_06.dump
new file mode 100644 (file)
index 0000000..e647cec
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_07.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_07.dump
new file mode 100644 (file)
index 0000000..8ce2d2b
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new file mode 100644 (file)
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_09.dump b/runtime/syntax/testdir/dumps/vim9_generic_function_example_set_09.dump
new file mode 100644 (file)
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new file mode 100644 (file)
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_functions_00.dump b/runtime/syntax/testdir/dumps/vim9_generic_functions_00.dump
new file mode 100644 (file)
index 0000000..54a81b4
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_functions_00.dump
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_functions_01.dump b/runtime/syntax/testdir/dumps/vim9_generic_functions_01.dump
new file mode 100644 (file)
index 0000000..c45db4e
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_functions_01.dump
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_functions_02.dump b/runtime/syntax/testdir/dumps/vim9_generic_functions_02.dump
new file mode 100644 (file)
index 0000000..187c8f3
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_functions_02.dump
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_functions_03.dump b/runtime/syntax/testdir/dumps/vim9_generic_functions_03.dump
new file mode 100644 (file)
index 0000000..77bdec7
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_functions_03.dump
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diff --git a/runtime/syntax/testdir/dumps/vim9_generic_functions_04.dump b/runtime/syntax/testdir/dumps/vim9_generic_functions_04.dump
new file mode 100644 (file)
index 0000000..e58e3bf
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_functions_04.dump
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+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|#+0&#ffffff0| +0#0000000&|I+0#e000e06&|s@1|u|e|:| +0#0000e05&|h|t@1|p|s|:|/@1|g|i|t|h|u|b|.|c|o|m|/|v|i|m|/|v|i|m|/|p|u|l@1|/|1|7@1|2@1|#|i|s@1|u|e|c|o|m@1|e|n|t|-|3|0|7|5@1|3|1|0|5|2| +0#0000000&@2
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |e+0#af5f00255#ffffff0|x|p|o|r|t| +0#0000000&|d+0#af5f00255&|e|f| +0#0000000&|I|d|<+0#e000e06&|U+0#0000001#ffff4012|>+0#e000e06#ffffff0|(|)|:+0#0000000&| |f+0#00e0003&|u|n|c|(|U+0#0000000&|)+0#00e0003&|:+0#0000000&| |U| @42
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|(+0#e000e06&|X+0#0000000&|_|:| |U|)+0#e000e06&| +0#0000000&|=+0#af5f00255&|>| +0#0000000&|X|_| @48
+||+0#0000e05#a8a8a8255| |e+0#af5f00255#ffffff0|n|d@1|e|f| +0#0000000&@66
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+@57|7|3|,|1| @9|8|5|%| 

diff --git a/runtime/syntax/testdir/dumps/vim9_generic_functions_05.dump b/runtime/syntax/testdir/dumps/vim9_generic_functions_05.dump
new file mode 100644 (file)
index 0000000..a804b2f
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/vim9_generic_functions_05.dump
@@ -0,0 +1,20 @@
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| |e+0#af5f00255#ffffff0|x|p|o|r|t| +0#0000000&|d+0#af5f00255&|e|f| +0#0000000&|C|o|n|s|t|<+0#e000e06&|U+0#0000001#ffff4012|,+0#0000000#ffffff0| |V+0#0000001#ffff4012|>+0#e000e06#ffffff0|(|)|:+0#0000000&| |f+0#00e0003&|u|n|c|(|U+0#0000000&|)+0#00e0003&|:+0#0000000&| |f+0#00e0003&|u|n|c|(|V+0#0000000&|)+0#00e0003&|:+0#0000000&| |U| @27
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|(+0#e000e06&|X+0#0000000&|_|:| |U|)+0#e000e06&| +0#0000000&|=+0#af5f00255&|>| +0#0000000&|(+0#e000e06&|_+0#0000000&|:| |V|)+0#e000e06&| +0#0000000&|=+0#af5f00255&|>| +0#0000000&|X|_| @38
+||+0#0000e05#a8a8a8255| |e+0#af5f00255#ffffff0|n|d@1|e|f| +0#0000000&@66
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|-+0#0000e05#a8a8a8255| >e+0#af5f00255#ffffff0|x|p|o|r|t| +0#0000000&|d+0#af5f00255&|e|f| +0#0000000&|F|l|i|p|<+0#e000e06&|U+0#0000001#ffff4012|,+0#0000000#ffffff0| |V+0#0000001#ffff4012|,+0#0000000#ffffff0| |W+0#0000001#ffff4012|>+0#e000e06#ffffff0|(|)|:+0#0000000&| |f+0#00e0003&|u|n|c|(|f|u|n|c|(|U+0#0000000&|)+0#00e0003&|:+0#0000000&| |f+0#00e0003&|u|n|c|(|V+0#0000000&|)+0#00e0003&|:+0#0000000&| |W|)+0#00e0003&|:+0#0000000&| |f+0#00e0003&|u|n|c|(|V+0#0000000&|)+0#00e0003&|:+0#0000000&| |f+0#00e0003&|u|n|c|(|U+0#0000000&|)+0#00e0003&|:+0#0000000&| 
+|-+0#0000e05#a8a8a8255| |W+0#0000000#ffffff0| @71
+||+0#0000e05#a8a8a8255| | +0#0000000#ffffff0@3|r+0#af5f00255&|e|t|u|r|n| +0#0000000&|(+0#e000e06&|F+0#0000000&|_|:| |f+0#00e0003&|u|n|c|(|U+0#0000000&|)+0#00e0003&|:+0#0000000&| |f+0#00e0003&|u|n|c|(|V+0#0000000&|)+0#00e0003&|:+0#0000000&| |W|)+0#e000e06&| +0#0000000&|=+0#af5f00255&|>| +0#0000000&|(+0#e000e06&|Y+0#0000000&|_|:| |V|)+0#e000e06&| +0#0000000&|=+0#af5f00255&|>| +0#0000000&|(+0#e000e06&|X+0#0000000&|_|:| |U|)+0#e000e06&| +0#0000000&|=+0#af5f00255&|>| +0#0000000&|F|_|(+0#e000e06&|X+0#0000000&|_|)+0#e000e06&|(|Y+0#0000000&|_|)+0#e000e06&| +0#0000000&
+||+0#0000e05#a8a8a8255| |e+0#af5f00255#ffffff0|n|d@1|e|f| +0#0000000&@66
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+| +0#0000e05#a8a8a8255@1|e+0#af5f00255#ffffff0|c|h|o| +0#0000000&|C|o|n|s|t|<+0#e000e06&|n+0#00e0003&|u|m|b|e|r|,+0#0000000&| |a+0#00e0003&|n|y|>+0#e000e06&|(|)|(|2+0#e000002&|)+0#e000e06&|(|n+0#e000002&|u|l@1|)+0#e000e06&| +0#0000000&@38
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@3|=+0#af5f00255&@1| +0#0000000&|F|l|i|p|<+0#e000e06&|n+0#00e0003&|u|m|b|e|r|,+0#0000000&| |a+0#00e0003&|n|y|,+0#0000000&| |n+0#00e0003&|u|m|b|e|r|>+0#e000e06&|(|)|(|C+0#0000000&|o|n|s|t|<+0#e000e06&|n+0#00e0003&|u|m|b|e|r|,+0#0000000&| |a+0#00e0003&|n|y|>+0#e000e06&|(|)@1|(|n+0#e000002&|u|l@1|)+0#e000e06&|(|2+0#e000002&|)+0#e000e06&| +0#0000000&@7
+| +0#0000e05#a8a8a8255@1| +0#0000000#ffffff0@72
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+| +0#0000000&@56|9|1|,|1| @9|B|o|t| 

diff --git a/runtime/syntax/testdir/input/vim9_generic_function_example_list.vim b/runtime/syntax/testdir/input/vim9_generic_function_example_list.vim
new file mode 100644 (file)
index 0000000..597c027
--- /dev/null
+++ b/runtime/syntax/testdir/input/vim9_generic_function_example_list.vim
@@ -0,0 +1,215 @@
+vim9script
+# VIM_TEST_SETUP highlight link vim9DefTypeParam Todo
+# VIM_TEST_SETUP let g:vimsyn_folding = "f"
+# VIM_TEST_SETUP setl fdc=2 fdl=99 fdm=syntax
+# See: https://github.com/vim/vim/pull/17313#issuecomment-3046696820 (Aliaksei Budavei)
+
+
+# See https://github.com/vim/vim/pull/16604#issuecomment-265202845 .
+export interface Listable
+    def Cons<E>(_: E): Listable
+    def Reverse<E>(): Listable
+    def Rest(): Listable
+    def First<E>(): E
+    def empty(): bool
+    def len(): number
+    def string(): string
+endinterface
+
+enum EmptyList implements Listable
+    INSTANCE
+
+    def Cons<E>(value: E): Listable
+       return List.new<E>(value)
+    enddef
+
+    def Reverse<E>(): Listable
+       return this
+    enddef
+
+    def Rest(): Listable
+       return this
+    enddef
+
+    def First<E>(): E
+       return null
+    enddef
+
+    def empty(): bool
+       return true
+    enddef
+
+    def len(): number
+       return 0
+    enddef
+
+    def string(): string
+       return '[]'
+    enddef
+endenum
+
+class List implements Listable
+    const _value: any
+    const _size: number
+    var _next: Listable
+
+    def new<E>(value: E)
+       this._value = value
+       this._size = 1
+       this._next = EmptyList.INSTANCE
+    enddef
+
+    def _newCons<E>(value: E, size: number)
+       this._value = value
+       this._size = size
+    enddef
+
+    def Cons<E>(value: E): Listable
+       const list: List = List._newCons<E>(value, (this._size + 1))
+       list._next = this
+       return list
+    enddef
+
+    def Reverse<E>(): Listable
+       var result: Listable = List.new<E>(this.First<E>())
+       var list: Listable = this.Rest()
+
+       while !list.empty()
+           result = result.Cons<E>(list.First<E>())
+           list = list.Rest()
+       endwhile
+
+       return result
+    enddef
+
+    def Rest(): Listable
+       return this._next
+    enddef
+
+    def First<E>(): E
+       return this._value
+    enddef
+
+    def empty(): bool
+       return (this._size == 0)
+    enddef
+
+    def len(): number
+       return this._size
+    enddef
+
+    def string(): string
+       if this.empty()
+           return '[]'
+       endif
+
+       var text: string = '[' .. string(this.First<any>()) .. ', '
+       var list: Listable = this.Rest()
+
+       while !list.empty()
+           text ..= string(list.First<any>()) .. ', '
+           list = list.Rest()
+       endwhile
+
+       return strpart(text, 0, (strlen(text) - 2)) .. ']'
+    enddef
+endclass
+
+export def MakeEmptyList(): Listable
+    return EmptyList.INSTANCE
+enddef
+
+export def MakeList<E>(value: E): Listable
+    return List.new<E>(value)
+enddef
+
+export def Map<T, U>(listable: Listable, Mapper: func(T): U): Listable
+    var result: Listable = EmptyList.INSTANCE
+    var list: Listable = listable
+
+    while !list.empty()
+       result = result.Cons<U>(Mapper(list.First<T>()))
+       list = list.Rest()
+    endwhile
+
+    return result.Reverse<U>()
+enddef
+
+export def Filter<T>(listable: Listable, Predicate: func(T): bool): Listable
+    var result: Listable = EmptyList.INSTANCE
+    var list: Listable = listable
+
+    while !list.empty()
+       if Predicate(list.First<T>())
+           result = result.Cons<T>(list.First<T>())
+       endif
+
+       list = list.Rest()
+    endwhile
+
+    return result.Reverse<T>()
+enddef
+
+############################################################
+
+echo MakeEmptyList()
+
+const listX: Listable = MakeEmptyList()
+    .Cons<number>(0).Cons<number>(1).Cons<number>(2).Cons<number>(3)
+const listY: Listable = MakeList<number>(0)
+    .Cons<number>(1).Cons<number>(2).Cons<number>(3)
+echo listX == listY
+echo listX
+echo listX.Reverse<number>()
+echo MakeEmptyList().Reverse<any>()
+echo Filter<number>(listX, (value: number) => value % 2 != 0)
+echo Map<number, string>(listX, (value: number) => nr2char((value + 60), 1))
+
+echo 4 listX.len() listY.len()
+echo listX
+echo listY
+
+const list3X: Listable = listX.Rest()
+const list3Y: Listable = listY.Rest()
+echo 3 list3X.len() list3Y.len()
+echo list3X
+echo list3Y
+
+const list2X: Listable = list3X.Rest()
+const list2Y: Listable = list3Y.Rest()
+echo 2 list2X.len() list2Y.len()
+echo list2X
+echo list2Y
+
+const list1X: Listable = list2X.Rest()
+const list1Y: Listable = list2Y.Rest()
+echo 1 list1X.len() list1Y.len()
+echo list1X
+echo list1Y
+
+const list0X: Listable = list1X.Rest()
+const list0Y: Listable = list1Y.Rest()
+echo 0 list0X.len() list0Y.len()
+echo list0X
+echo list0Y
+
+const list0X_: Listable = list0X.Rest()
+const list0Y_: Listable = list0Y.Rest()
+echo 0 list0X_.len() list0Y_.len()
+echo list0X_
+echo list0Y_
+
+const list0X__: Listable = list0X_.Rest()
+const list0Y__: Listable = list0Y_.Rest()
+echo 0 list0X__.len() list0Y__.len()
+echo list0X__
+echo list0Y__
+
+
+const listZ: Listable = MakeList<Listable>(MakeList<number>(-1))
+const listZZ: Listable = listZ.Cons<Listable>(MakeList<number>(0))
+    .Cons<Listable>(MakeList<number>(1))
+    .Cons<Listable>(MakeList<number>(2))
+    .Cons<Listable>(MakeList<number>(3))
+echo listZZ
+

diff --git a/runtime/syntax/testdir/input/vim9_generic_function_example_set.vim b/runtime/syntax/testdir/input/vim9_generic_function_example_set.vim
new file mode 100644 (file)
index 0000000..a4b11fa
--- /dev/null
+++ b/runtime/syntax/testdir/input/vim9_generic_function_example_set.vim
@@ -0,0 +1,177 @@
+vim9script
+# VIM_TEST_SETUP highlight link vim9DefTypeParam Todo
+# VIM_TEST_SETUP let g:vimsyn_folding = "f"
+# VIM_TEST_SETUP setl fdc=2 fdl=99 fdm=syntax
+# See: https://github.com/vim/vim/pull/17313#issuecomment-3046696820 (Aliaksei Budavei)
+
+# See https://github.com/vim/vim/issues/14330#issuecomment-2028938515 .
+export class Set
+    final _elements: dict<number>
+    const _Mapper: func(number, string): any
+    const ToStringer: func(any): string
+    const FromStringer: func(string): any
+
+    static def _Mapper<E>(F: func(string): E): func(number, string): E
+       return ((G: func(string): E) => (_: number, v: string): E => G(v))(F)
+    enddef
+
+    def new<E>()
+       this._elements = {}
+       this._Mapper = _Mapper<E>((s: string): E => eval(s))
+       this.ToStringer = (a: E): string => string(a)
+       this.FromStringer = (s: string): E => eval(s)
+    enddef
+
+    def newFromList<E>(elements: list<E>, ToStringer: func(E): string,
+                                       FromStringer: func(string): E)
+       this._elements = elements
+           ->reduce(((F: func(E): string) => (d: dict<number>, v: E) =>
+               extend({[F(v)]: 1}, d))(ToStringer),
+               {})
+       this._Mapper = _Mapper<E>(FromStringer)
+       this.ToStringer = ToStringer
+       this.FromStringer = FromStringer
+    enddef
+
+    def _FromList<E>(elements: list<E>): Set
+       return Set.newFromList<E>(elements, this.ToStringer, this.FromStringer)
+    enddef
+
+    def Contains<E>(element: E): bool
+       return has_key(this._elements, this.ToStringer(element))
+    enddef
+
+    def Elements<E>(): list<E>
+       return keys(this._elements)->mapnew(this._Mapper)
+    enddef
+
+    def empty(): bool
+       return empty(this._elements)
+    enddef
+
+    def len(): number
+       return len(this._elements)
+    enddef
+
+    def string(): string
+       return string(keys(this._elements))
+    enddef
+
+    # {1, 2, 3} ⊇ {1, 2}.
+    def Superset(that: Set): bool
+       return (len(this._elements) >= len(that._elements)) && that._elements
+           ->keys()
+           ->indexof(((set: Set) => (_: number, v: string) => !set._elements
+               ->has_key(v))(this)) < 0
+    enddef
+
+    # {1, 2} ⊆ {1, 2, 3}.
+    def Subset(that: Set): bool
+       return (len(this._elements) <= len(that._elements)) && this._elements
+           ->keys()
+           ->indexof(((set: Set) => (_: number, v: string) => !set._elements
+               ->has_key(v))(that)) < 0
+    enddef
+
+    # {1, 2, 3} ∪ {2, 3, 4} = {1, 2, 3, 4}.
+    def Union(that: Set): Set
+       return this._FromList<any>({}
+           ->extend(that._elements)
+           ->extend(this._elements)
+           ->keys()
+           ->map(this._Mapper))
+    enddef
+
+    # {1, 2, 3} ∩ {2, 3, 4} = {2, 3}.
+    def Intersection(that: Set): Set
+       return this._FromList<any>(this._elements
+           ->keys()
+           ->filter(((set: Set) => (_: number, v: string) => set._elements
+               ->has_key(v))(that))
+           ->map(this._Mapper))
+    enddef
+
+    # {1, 2, 3} \ {2, 3, 4} = {1}.
+    # {2, 3, 4} \ {1, 2, 3} = {4}.
+    def SetDifference(that: Set): Set
+       return this._FromList<any>(this._elements
+           ->keys()
+           ->filter(((set: Set) => (_: number, v: string) => !set._elements
+               ->has_key(v))(that))
+           ->map(this._Mapper))
+    enddef
+
+    # {1, 2, 3} △ {2, 3, 4} = {1, 4}.
+    def SymmetricDifference(that: Set): Set
+       return this.Union(that).SetDifference(this.Intersection(that))
+    enddef
+endclass
+
+############################################################
+
+const ToStr: func(number): string = (s: number) => string(s)
+const FromStr: func(string): number = (s: string) => str2nr(s)
+
+echo Set.newFromList<number>([1, 2, 3], ToStr, FromStr)
+    .Subset(Set.newFromList<number>([1, 2], ToStr, FromStr))
+echo Set.newFromList<number>([1, 2], ToStr, FromStr)
+    .Subset(Set.newFromList<number>([1, 2, 3], ToStr, FromStr))
+echo Set.newFromList<number>([1, 2], ToStr, FromStr)
+    .Superset(Set.newFromList<number>([1, 2, 3], ToStr, FromStr))
+echo Set.newFromList<number>([1, 2, 3], ToStr, FromStr)
+    .Superset(Set.newFromList<number>([1, 2], ToStr, FromStr))
+
+echo Set.newFromList<number>([1, 2, 3], ToStr, FromStr)
+    .Union(Set.newFromList<number>([2, 3, 4], ToStr, FromStr))
+    .Elements<number>()
+echo Set.newFromList<number>([2, 3, 4], ToStr, FromStr)
+    .Union(Set.newFromList<number>([1, 2, 3], ToStr, FromStr))
+    .Elements<number>()
+
+echo Set.newFromList<number>([1, 2, 3], ToStr, FromStr)
+    .Intersection(Set.newFromList<number>([2, 3, 4], ToStr, FromStr))
+    .Elements<number>()
+echo Set.newFromList<number>([2, 3, 4], ToStr, FromStr)
+    .Intersection(Set.newFromList<number>([1, 2, 3], ToStr, FromStr))
+    .Elements<number>()
+
+echo Set.newFromList<number>([1, 2, 3], ToStr, FromStr)
+    .SetDifference(Set.newFromList<number>([2, 3, 4], ToStr, FromStr))
+    .Elements<number>()
+echo Set.newFromList<number>([2, 3, 4], ToStr, FromStr)
+    .SetDifference(Set.newFromList<number>([1, 2, 3], ToStr, FromStr))
+    .Elements<number>()
+
+echo Set.newFromList<number>([1, 2, 3], ToStr, FromStr)
+    .SymmetricDifference(Set.newFromList<number>([2, 3, 4], ToStr, FromStr))
+    .Elements<number>()
+echo Set.newFromList<number>([2, 3, 4], ToStr, FromStr)
+    .SymmetricDifference(Set.newFromList<number>([1, 2, 3], ToStr, FromStr))
+    .Elements<number>()
+
+############################################################
+
+const none: Set = Set.new<any>()
+echo none.len()
+echo none.empty()
+echo none.string()
+echo string(none.Elements<any>())
+
+const sets: Set = Set.newFromList<Set>(
+    [Set.new<any>(), Set.new<any>(), Set.new<any>(), Set.new<any>()],
+    (o: Set): string => string(o),
+    (_: string): Set => Set.new<any>())
+echo sets.len()
+echo sets.empty()
+echo sets.string()
+echo string(sets.Elements<Set>())
+
+const lists: Set = Set.newFromList<list<any>>(
+    [[[[[]]]]],
+    (o: list<any>): string => string(o),
+    (s: string): list<any> => eval(s))
+echo lists.len()
+echo lists.empty()
+echo lists.string()
+echo string(lists.Elements<list<any>>())
+

diff --git a/runtime/syntax/testdir/input/vim9_generic_functions.vim b/runtime/syntax/testdir/input/vim9_generic_functions.vim
new file mode 100644 (file)
index 0000000..0105324
--- /dev/null
+++ b/runtime/syntax/testdir/input/vim9_generic_functions.vim
@@ -0,0 +1,97 @@
+vim9script
+# Vim9 generic functions
+# VIM_TEST_SETUP highlight link vim9DefTypeParam Todo
+# VIM_TEST_SETUP let g:vimsyn_folding = "f"
+# VIM_TEST_SETUP setl fdc=2 fdl=99 fdm=syntax
+
+
+# :help generic-functions
+
+def MyFunc<T, A, B>(param1: T): T
+    var f: A
+    var x = param1
+    return x
+enddef
+
+MyFunc<number, string, list<number>>()
+
+
+def Flatten<T>(x: list<list<T>>): list<T>
+    var result: list<T> = []
+    for inner in x
+       result += inner
+    endfor
+    return result
+enddef
+
+echo Flatten<number>([[1, 2], [3]])
+
+
+class A
+    def Foo<X, Y>()
+    enddef
+endclass
+var a = A.new()
+a.Foo<number, string>()
+
+
+def MakeEcho<T>(): func(T): T
+    return (x: T): T => x
+enddef
+
+var EchoNumber = MakeEcho<number>()
+echo EchoNumber(123)
+
+var EchoString = MakeEcho<string>()
+echo EchoString('abc')
+
+# FIXME: add specific command handling
+# defcompile MyFunc<number, list<number>, dict<string>>
+
+# disassemble MyFunc<string, dict<string>>
+# disassemble MyFunc<number, list<blob>>
+
+
+# funcrefs
+
+var Foo = Bar<number>
+Execute(Bar<number>)
+
+var Foo = bar.Baz<string>
+Execute(bar.Baz<string>)
+
+class Foo
+  def _MethodA<T>(arg: T)
+    echo arg
+  enddef
+  def MethodB()
+    var F = this._MethodA<number>
+    F("text")
+  enddef
+endclass
+
+class Bar extends Foo
+  def MethodC()
+    var F = super._MethodA<number>
+    F("text")
+  enddef
+endclass
+
+
+# Issue: https://github.com/vim/vim/pull/17722#issuecomment-3075531052
+
+export def Id<U>(): func(U): U
+    return (X_: U) => X_
+enddef
+
+export def Const<U, V>(): func(U): func(V): U
+    return (X_: U) => (_: V) => X_
+enddef
+
+export def Flip<U, V, W>(): func(func(U): func(V): W): func(V): func(U): W
+    return (F_: func(U): func(V): W) => (Y_: V) => (X_: U) => F_(X_)(Y_)
+enddef
+
+echo Const<number, any>()(2)(null)
+    == Flip<number, any, number>()(Const<number, any>())(null)(2)
+

diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index 4e394d35ab6ddf7c289f8c42191b070750ba7c26..ec7d4784d1ab75a31b2363eafe69db7fcaed78ee 100644 (file)
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -2,7 +2,7 @@
 " Language:       Vim script
 " Maintainer:     Hirohito Higashi <h.east.727 ATMARK gmail.com>
 "         Doug Kearns <dougkearns@gmail.com>
-" Last Change:    2025 Jul 21
+" Last Change:    2025 Jul 23
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -321,6 +321,8 @@ syn match vimVimVar "\<v:"          nextgroup=vimSubscript,vimVimVarName,vimVarNameError
 syn match vimOptionVar "&\%([lg]:\)\="         nextgroup=vimSubscript,vimOptionVarName,vimVarNameError
 syn cluster vimSpecialVar      contains=vimEnvvar,vimLetRegister,vimOptionVar,vimVimVar
 
+Vim9 syn match vimVar  contained        "\<\h\w*\ze<"          nextgroup=vim9TypeArgs
+
 Vim9 syn match vim9LhsVariable "\s\=\h[a-zA-Z0-9#_]*\ze\s\+[-+/*%]\=="
 Vim9 syn match vim9LhsVariable "\s\=\h[a-zA-Z0-9#_]*\ze\s\+\.\.="
 Vim9 syn match vim9LhsVariable "\s\=\%([bwgt]:\)\=\h[a-zA-Z0-9#_]*\ze\s\+=<<"  skipwhite nextgroup=vimLetHeredoc       contains=vimVarScope
@@ -522,7 +524,7 @@ syn match   vimFunctionName contained
       \ contains=vimFunctionError,vimFunctionScope,vimFunctionSID,Tag
 syn match      vimDefName      contained
       \ "\%(<[sS][iI][dD]>\|[bwglstav]:\)\=\%([[:alnum:]_#.]\+\|{.\{-1,}}\)\+"
-      \ nextgroup=vimDefParams,vimCmdSep,vimComment,vim9Comment
+      \ nextgroup=vimDefTypeParams,vimDefParams,vimCmdSep,vimComment,vim9Comment
       \ contains=vimFunctionError,vimFunctionScope,vimFunctionSID,Tag
 
 syn match      vimFunction     "\<fu\%[nction]\>"      skipwhite nextgroup=vimFunctionBang,vimFunctionName,vimFunctionPattern,vimCmdSep,vimComment
@@ -552,8 +554,15 @@ syn region vimDefParams    contained
       \ end=")"
       \ skipwhite skipempty nextgroup=vimDefBody,vimDefComment,vimEnddef,vimReturnType,vimCommentError
       \ contains=vimDefParam,vim9Comment,vimFunctionParamEquals,vimOperParen
+syn region     vimDefTypeParams        contained
+      \ matchgroup=Delimiter
+      \ start="<"
+      \ end=">"
+      \ nextgroup=vimDefParams
+      \ contains=vim9DefTypeParam
 syn match      vimFunctionParam        contained       "\<\h\w*\>\|\.\.\."     skipwhite nextgroup=vimFunctionParamEquals
 syn match      vimDefParam     contained       "\<\h\w*\>"             skipwhite nextgroup=vimParamType,vimFunctionParamEquals
+syn match      vim9DefTypeParam        contained       "\<\u\w*\>"
 
 syn match      vimFunctionParamEquals contained        "="                     skipwhite         nextgroup=@vimExprList
 syn match      vimFunctionMod       contained  "\<\%(abort\|closure\|dict\|range\)\>"  skipwhite skipempty nextgroup=vimFunctionBody,vimFunctionComment,vimEndfunction,vimFunctionMod,vim9CommentError
@@ -585,7 +594,7 @@ if exists("g:vimsyn_folding") && g:vimsyn_folding =~# 'f'
   syn region   vimDefFold
         \ start="\<def!"
         "\ assume no dict literal in curly-brace name expressions
-        \ start="\<def\>\s*\%([[:alnum:]_:<>.#]\+\|{.\{-1,}}\)\+("
+        \ start="\<def\>\s*\%([[:alnum:]_:<>.#]\+\|{.\{-1,}}\)\+[<(]"
         \ end="^\s*:\=\s*enddef\>"
         \ contains=vimDef
         \ extend fold keepend transparent
@@ -627,14 +636,20 @@ if s:vim9script
 
   " Methods {{{3
   syn match    vim9MethodDef           contained       "\<def\>"       skipwhite nextgroup=vim9MethodDefName,vim9ConstructorDefName
-  syn match    vim9MethodDefName               contained       "\<\h\w*\>"     nextgroup=vim9MethodDefParams contains=@vim9MethodName
+  syn match    vim9MethodDefName               contained       "\<\h\w*\>"     nextgroup=vim9MethodDefParams,vim9MethodDefTypeParams contains=@vim9MethodName
   syn region   vim9MethodDefParams     contained
         \ matchgroup=Delimiter start="(" end=")"
         \ skipwhite skipnl nextgroup=vim9MethodDefBody,vim9MethodDefComment,vimEnddef,vim9MethodDefReturnType,vimCommentError
         \ contains=vimDefParam,vim9Comment,vimFunctionParamEquals
+  syn region   vim9MethodDefTypeParams contained
+        \ matchgroup=Delimiter
+        \ start="<"
+        \ end=">"
+        \ nextgroup=vim9MethodDefParams
+        \ contains=vim9DefTypeParam
 
   syn match    vim9ConstructorDefName  contained       "\<_\=new\w*\>"
-        \ nextgroup=vim9ConstructorDefParams
+        \ nextgroup=vim9ConstructorDefParams,vim9ConstuctorDefTypeParams
         \ contains=@vim9MethodName
   syn match    vim9ConstructorDefParam contained       "\<\%(this\.\)\=\h\w*\>"
         \ skipwhite nextgroup=vimParamType,vimFunctionParamEquals
@@ -643,6 +658,12 @@ if s:vim9script
         \ matchgroup=Delimiter start="(" end=")"
         \ skipwhite skipnl nextgroup=vim9MethodDefBody,vim9MethodDefComment,vimEnddef,vimCommentError
         \ contains=vim9ConstructorDefParam,vim9Comment,vimFunctionParamEquals
+  syn region   vim9ConstuctorDefTypeParams     contained
+        \ matchgroup=Delimiter
+        \ start="<"
+        \ end=">"
+        \ nextgroup=vim9ConstructorDefParams
+        \ contains=vim9DefTypeParam
 
   syn region   vim9MethodDefReturnType contained
         \ start=":\%(\s\|\n\)\@="
@@ -676,8 +697,11 @@ if s:vim9script
   syn cluster  vim9MethodName  contains=vim9MethodName,vim9MethodNameError
 
   if exists("g:vimsyn_folding") && g:vimsyn_folding =~# 'f'
-    syn region vim9MethodDefFold       contained       start="\%(^\s*\%(:\=static\s\+\)\=\)\@16<=:\=def\s\+\h\i*(" end="^\s*:\=enddef\>" contains=vim9MethodDef fold keepend extend transparent
-    syn region vim9MethodDefFold       contained       start="^\s*:\=def\s\+_\=new\i*("                      end="^\s*:\=enddef\>" contains=vim9MethodDef fold keepend extend transparent
+    syn region vim9MethodDefFold       contained
+          \ start="\%(^\s*\%(:\=static\s\+\)\=\)\@16<=:\=def\s\+\h\w*[<(]"
+          \ end="^\s*:\=enddef\>"
+          \ contains=vim9MethodDef
+          \ fold keepend extend transparent
   endif
 
   syn cluster vim9MethodDef contains=vim9MethodDef,vim9MethodDefFold
@@ -757,7 +781,7 @@ if s:vim9script
   syn match    vim9InterfaceName               contained       "\<\u\w*\>"     skipwhite skipnl nextgroup=vim9Extends
 
   syn keyword  vim9AbstractDef         contained       def     skipwhite nextgroup=vim9AbstractDefName
-  syn match    vim9AbstractDefName     contained       "\<\h\w*\>"     skipwhite nextgroup=vim9AbstractDefParams contains=@vim9MethodName
+  syn match    vim9AbstractDefName     contained       "\<\h\w*\>"     skipwhite nextgroup=vim9AbstractDefParams,vim9AbstractDefTypeParams contains=@vim9MethodName
   syn region   vim9AbstractDefParams   contained
         \ matchgroup=Delimiter start="(" end=")"
         \ skipwhite skipnl nextgroup=vimDefComment,vim9AbstractDefReturnType,vimCommentError
@@ -767,6 +791,12 @@ if s:vim9script
         \ skipwhite skipnl nextgroup=vimDefComment,vimCommentError
         \ contains=vimTypeSep
         \ transparent
+  syn region   vim9AbstractDefTypeParams       contained
+        \ matchgroup=Delimiter
+        \ start="<"
+        \ end=">"
+        \ nextgroup=vim9AbstractDefParams
+        \ contains=vim9DefTypeParam
 
   VimFoldi syn region  vim9InterfaceBody       start="\<interface\>" matchgroup=vimCommand end="\<endinterface\>" contains=@vim9InterfaceBodyList transparent
 
@@ -1493,7 +1523,7 @@ syn match vimBracket contained    "[\\<>]"
 syn case match
 
 " User Command Highlighting: {{{2
-syn match vimUsrCmd    '^\s*\zs\u\%(\w*\)\@>\%([.(#[]\|\s\+\%([-+*/%]\=\|\.\.\)=\)\@!'
+syn match vimUsrCmd    '^\s*\zs\u\%(\w*\)\@>\%([<.(#[]\|\s\+\%([-+*/%]\=\|\.\.\)=\)\@!'
 
 " Vim user commands
 
@@ -2150,18 +2180,26 @@ unlet s:interfaces
 " Function Call Highlighting: {{{2
 " (following Gautam Iyer's suggestion)
 " ==========================
-syn match      vimFunc contained       "\<\l\w*\ze\s*("                                skipwhite nextgroup=vimOperParen contains=vimFuncName
-syn match      vimUserFunc     contained       "\.\@1<=\l\w*\ze\s*("                   skipwhite nextgroup=vimOperParen
-syn match      vimUserFunc     contained       "\<\%([[:upper:]_]\|\%(\h\w*\.\)\+\h\)\w*\ze\s*("               skipwhite nextgroup=vimOperParen contains=vim9MethodName,vim9Super,vim9This
-syn match      vimUserFunc     contained       "\<\%(g:\)\=\%(\h\w*#\)\+\h\w*\ze\s*("          skipwhite nextgroup=vimOperParen contains=vimVarScope
-syn match      vimUserFunc     contained       "\%(\<[sgbwtlav]:\|<[sS][iI][dD]>\)\%(\h\w*\.\)*\h\w*\ze\s*("   skipwhite nextgroup=vimOperParen contains=vimVarScope,vimNotation
+syn match      vimFunc contained       "\<\l\w*\ze\s*("                                        skipwhite nextgroup=vimOperParen                contains=vimFuncName
+syn match      vimUserFunc     contained       "\.\@1<=\l\w*\ze\%(\s*(\|<.*>(\)"                               skipwhite nextgroup=vimOperParen,vim9TypeArgs
+syn match      vimUserFunc     contained       "\<\%([[:upper:]_]\|\%(\h\w*\.\)\+\h\)\w*\ze\%(\s*(\|<.*>(\)"           skipwhite nextgroup=vimOperParen,vim9TypeArgs   contains=vim9MethodName,vim9Super,vim9This
+syn match      vimUserFunc     contained       "\<\%(g:\)\=\%(\h\w*#\)\+\h\w*\ze\%(\s*(\|<.*>(\)"                      skipwhite nextgroup=vimOperParen                contains=vimVarScope
+syn match      vimUserFunc     contained       "\%(\<[sgbwtlav]:\|<[sS][iI][dD]>\)\%(\h\w*\.\)*\h\w*\ze\%(\s*(\|<.*>(\)"       skipwhite nextgroup=vimOperParen,vim9TypeArgs   contains=vimVarScope,vimNotation
 
-Vim9 syn match vim9UserFunc    "^\s*\zs\%([sgbwtv]:\|<[sS][iI][dD]>\)\=\%(\h\w*[.#]\)*\h\w*\ze("               skipwhite nextgroup=vimOperParen contains=vimVarScope,vimNotation,vim9MethodName,vim9Super,vim9This
-Vim9 syn match vim9Func        "^\s*\zs\l\w*\ze("                              skipwhite nextgroup=vimOperParen contains=vimFuncName
+Vim9 syn match vim9UserFunc    "^\s*\zs\%([sgbwtv]:\|<[sS][iI][dD]>\)\=\%(\h\w*[.#]\)*\h\w*\ze[<(]"                    skipwhite nextgroup=vimOperParen,vim9TypeArgs   contains=vimVarScope,vimNotation,vim9MethodName,vim9Super,vim9This
+Vim9 syn match vim9Func        "^\s*\zs\l\w*\ze("                                      skipwhite nextgroup=vimOperParen                contains=vimFuncName
 
 syn cluster    vimFunc contains=vimFunc,vimUserFunc
 syn cluster    vim9Func        contains=vim9Func,vim9UserFunc
 
+syn region     vim9TypeArgs    contained
+      \ matchgroup=Delimiter
+      \ start="<\ze\a"
+      \ end=">"
+      \ nextgroup=vimOperParen
+      \ contains=@vimType
+      \ oneline
+
 " Beginners - Patterns that involve ^ {{{2
 " =========
 Vim9 syn region        vim9LineComment start=+^[ \t:]*\zs#.*$+ skip=+\n\s*\\\|\n\s*#\\ + end="$" contains=@vimCommentGroup,vimCommentString,vim9CommentTitle extend