10   def SomeFunc(): string
326 def ReturnString(): string
327   return 'string'
334 let g:notNumber = 'string'
341   ReturnString()->assert_equal('string')
343 …assert_fails('ReturnGlobal()', 'E1012: Type mismatch; expected number but got string', '', 1, 'Ret…
390       def MenuFilter(id: number, key: string): bool  argument
393       def YesnoFilter(id: number, key: string): bool  argument
444       def Func(): list<string>
446         l->add('string')
454       def Func(): list<string>
456         l += ['string']
479 def MyVarargs(arg: string, ...rest: list<string>): string  argument
497 def MyDefaultArgs(name = 'string'): string
501 def MyDefaultSecond(name: string, second: bool  = true): string  argument
507   MyDefaultArgs()->assert_equal('string')
508   MyDefaultArgs(v:none)->assert_equal('string')
517       def MyDefaultThird(name: string, aa = 'aa', bb = 'bb'): string  argument
529       def DefArg(mandatory: any, optional = mandatory): string
539 …xt")', 'enddef', 'defcompile'], 'E1013: Argument 1: type mismatch, expected number but got string')
555   c: string) #comment
566         arg: string)
573         arg: string# comment
581         arg: string
589   def Nested(arg: string): string  argument
595   CheckDefFailure(['def Nested(arg: string)', 'enddef', 'Nested()'], 'E119:')
679   call MyDefaultArgs()->assert_equal('string')
688           def g:Inner(): string
708           def g:Inner(): string
797       def g:Func(): string
800       def Func(): string
822       def g:Gfunc(): string
837       def g:Func(): string
851       def g:Func(): string
854       def AnotherFunc(): string
864       def g:Func(): string
881   CheckScriptFailure(['def Func(Ref: func(s: string))'], 'E475:')
885     def Func(s: string)  argument
890 …CheckScriptFailure(lines, 'E1013: Argument 1: type mismatch, expected string but got list<unknown>…
895     def FuncOne(name: string)  argument
949       def Func3(a1: string, a2: number, a3: list<number>)  argument
988     assert_equal('xyz', ((a: string): string => a)('xyz'))
999   CheckDefFailure(lines, 'E1013: Argument 2: type mismatch, expected number but got string')
1002     var Ref: func(job, string, number)
1008     var Ref: func(job, string)
1073           ->string()
1080 def FilterWithCond(x: string, Cond: func(string): bool): bool  argument
1105 …(lines, 'E1013: Argument 2: type mismatch, expected func(string): bool but got func(any): string',…
1112       var Lambda2 = (x): string => {
1120       var Lambda = (x): string => {
1182 def MyDefVarargs(one: string, two = 'foo', ...rest: list<string>): string  argument
1196       'E1013: Argument 2: type mismatch, expected string but got number')
1198       'E1013: Argument 3: type mismatch, expected string but got number')
1202       def Func(...l: list<string>)  argument
1211       def Func(...l: list<string>)  argument
1238       def Func(..._l: list<string>)  argument
1247       def Func(...l: list<string>)  argument
1256       def Func(...l: list<string>)  argument
1265       def Func(...l: list<string>)  argument
1292   CheckScriptFailure(lines, 'E1013: Argument 1: type mismatch, expected number but got string')
1301 def FuncTwoDefArg(nr = 123, opt = 'text'): string
1305 def FuncVarargs(...arg: list<string>): string  argument
1310   var RefDefArg: func(?string)
1317   var RefDef2Arg: func(?number, ?string): string
1323   CheckDefFailure(['var RefWrong: func(string?)'], 'E1010:')
1324   CheckDefFailure(['var RefWrong: func(?string, string)'], 'E1007:')
1326   var RefVarargs: func(...list<string>): string
1332   CheckDefFailure(['var RefWrong: func(...list<string>, string)'], 'E110:')
1333   CheckDefFailure(['var RefWrong: func(...list<string>, ?string)'], 'E110:')
1337 def MyVarargsOnly(...args: list<string>): string  argument
1345 …CheckDefFailure(['MyVarargsOnly(1)'], 'E1013: Argument 1: type mismatch, expected string but got n…
1346 …CheckDefFailure(['MyVarargsOnly("one", 2)'], 'E1013: Argument 2: type mismatch, expected string bu…
1355 def DictArg(arg: dict<string>)  argument
1359 def ListArg(arg: list<string>)  argument
1365   var d: dict<string> = {}
1368   var l: list<string> = []
1377 def WithReservedNames(firstline: string, lastline: string): string  argument
1437     var Funcref: func(string) = function('UseNumber')
1439   CheckScriptFailure(lines, 'E1012: Type mismatch; expected func(string) but got func(number)')
1495   var Ref1: func(bool): string
1507   var Refb1: func(bool, string): number
1508   var Refb2: func(string, number): number
1517 def DefinedEvenLater(arg: string): string  argument
1531         'defcompile'], 'expected number but got string')
1534         'def Func(): string',
1537         'defcompile'], 'expected string but got number')
1603   CheckScriptFailure(['def Func5(items:string)', 'echo "a"'], 'E1069:')
1640     def MyFunc(arg: string)  argument
1733     def MyFunc(arg: string)  argument
1744     def MyFunc(arg: string)  argument
1749   CheckScriptFailure(lines, 'E1013: Argument 1: type mismatch, expected string but got number')
1756     def MyFunc(arg: string)  argument
1811   writefile(['def Func0(): string',  'return "Func0"', 'enddef'], 'Xdef')
1813   writefile(['def Func1(): string',  'return "Func1"', 'enddef'], 'Xdef')
1815   writefile(['def! Func0(): string', 'enddef', 'defcompile'], 'Xdef')
1817   writefile(['def Func2(): string',  'return "Func2"', 'enddef'], 'Xdef')
1855 def FuncNoArgRetString(): string
1873 def FuncOneArgRetString(arg: string): string  argument
1938 …'RefVoid = FuncNoArgRetString'], 'E1012: Type mismatch; expected func(...) but got func(): string')
1952 … = FuncNoArgRetString'], 'E1012: Type mismatch; expected func(...): number but got func(): string')
1954   var RefStr: func: string
1957 …ckDefFailure(['var RefStr: func: string', 'RefStr = FuncNoArgNoRet'], 'E1012: Type mismatch; expec…
1958 …DefFailure(['var RefStr: func: string', 'RefStr = FuncNoArgRetNumber'], 'E1012: Type mismatch; exp…
1971   CheckDefFailure(['var RefWrong: func(string ,number)'], 'E1068:')
1972   CheckDefFailure(['var RefWrong: func(string,number)'], 'E1069:')
1974   CheckDefFailure(['var RefWrong: func(bool):string'], 'E1069:')
1985   var str: string
1989 …CheckDefFailure(['var str: string', 'str = FuncNoArgRetNumber()'], 'E1012: Type mismatch; expected…
1996   def FuncTwo(s: string): number  argument
1999   def FuncThree(n: number, s: string): number  argument
2009     arg1: string,
2011     ...rest: list<string>
2012       ): string
2017     arg1: string, # comment
2019     ...rest: list<string> # comment
2020       ): string # comment
2144 def RefFunc(Ref: func(any): any): string
2182 def ReadRef(Ref: func(): list<string>): string
2186 def ExtendRef(Ref: func(string): list<string>, add: string)  argument
2202 def MakeArgRefs(theArg: string)  argument
2207 def MakeArgRefsVarargs(theArg: string, ...rest: list<string>)  argument
2238   def Append(arg: string)  argument
2243   def Get(): string
2263   def Closure(arg: string): string  argument
2313     def FuncB(n: number): list<string>
2369         # make sure typvals on stack are string
2404       def F(head: string): func(string): func(string): string  argument
2405         return (sep: string): func(string): string => ((tail: string): string => {
2417       def F(text: string): func(string): func(string): string  argument
2418         return (arg: string): func(string): string => ((sep: string): string => {
2430           return string(s)
2462 def Line_continuation_in_def(dir: string = ''): string  argument
2463   var path: string = empty(dir)
2482 def Line_continuation_in_lambda(): list<string>
2496                 ->mapnew((_, v: dict<any>): string => printf('%d:%d:%s',
2509          ->string()
2636 def DoFilterThis(a: string): list<string>  argument
2648   var Match = (val: string, cmp: string): bool => stridx(val, cmp) == 0
2705       def Filter(winid: number, key: string): bool  argument
2731 def TreeWalk(dir: string): list<any>  argument
2753       def s: list<string>
2759       def g: list<string>
2765       def <SID>: list<string>
2771       def F list<string>
3044   def g:Opfunc(_: any): string
3081       def F1(x: string): string  argument
3093       def H(d: dict<func>): string
3154       def Ignore(_, _): string
3175       def Ignore(_: string): string  argument