nojaf
commented
3 years ago Hello Theodor, thank you for reporting this issue.
The extra space seems to lead to a function call. Consider the following example:
let x =
{ actual = 6
y = x }
let y =
{ actual = 6
y = x }matching AST
ImplFile
(ParsedImplFileInput
("tmp.fsx", true, QualifiedNameOfFile Tmp$fsx, [], [],
[SynModuleOrNamespace
([Tmp], false, AnonModule,
[Let
(false,
[Binding
(None, NormalBinding, false, false, [],
PreXmlDoc ((1,4), FSharp.Compiler.XmlDoc+XmlDocCollector),
SynValData
(None, SynValInfo ([], SynArgInfo ([], false, None)), None),
Named
(Wild tmp.fsx (1,4--1,5) IsSynthetic=false, x, false, None,
tmp.fsx (1,4--1,5) IsSynthetic=false), None,
Record
(None, None,
[((LongIdentWithDots ([actual], []), true),
Some
(App
(NonAtomic, false,
App
(NonAtomic, true, Ident op_Equality,
App
(NonAtomic, false,
Const
(Int32 6,
tmp.fsx (2,17--2,18) IsSynthetic=false),
Ident y,
tmp.fsx (2,17--3,10) IsSynthetic=false),
tmp.fsx (2,17--3,12) IsSynthetic=false), Ident x,
tmp.fsx (2,17--3,14) IsSynthetic=false)), None)],
tmp.fsx (2,6--3,16) IsSynthetic=false),
tmp.fsx (1,4--1,5) IsSynthetic=false,
DebugPointAtBinding tmp.fsx (1,0--3,16) IsSynthetic=false)],
tmp.fsx (1,0--3,16) IsSynthetic=false);
Let
(false,
[Binding
(None, NormalBinding, false, false, [],
PreXmlDoc ((5,4), FSharp.Compiler.XmlDoc+XmlDocCollector),
SynValData
(None, SynValInfo ([], SynArgInfo ([], false, None)), None),
Named
(Wild tmp.fsx (5,4--5,5) IsSynthetic=false, y, false, None,
tmp.fsx (5,4--5,5) IsSynthetic=false), None,
Record
(None, None,
[((LongIdentWithDots ([actual], []), true),
Some
(Const
(Int32 6, tmp.fsx (6,17--6,18) IsSynthetic=false)),
Some (tmp.fsx (6,19--7,8) IsSynthetic=false, None));
((LongIdentWithDots ([y], []), true), Some (Ident x), None)],
tmp.fsx (6,6--7,15) IsSynthetic=false),
tmp.fsx (5,4--5,5) IsSynthetic=false,
DebugPointAtBinding tmp.fsx (5,0--7,15) IsSynthetic=false)],
tmp.fsx (5,0--7,15) IsSynthetic=false)], PreXmlDocEmpty, [], None,
tmp.fsx (1,0--7,15) IsSynthetic=false)], (true, true)))So
actual = 6
y = x // with spaceappears to be a function call and there Fantomas is trying to figure out if it needs a space or not. An extra pattern match clause in https://github.com/fsprojects/fantomas/blob/9bc785c38d316c5e5b1bbdaeae04ed05b5ee8088/src/Fantomas/CodePrinter.fs#L48-L57
before UppercaseSynExpr could solve the problem I think.
Please note that original extra space might end up to something different then you indented.
Are you interested in submitting a PR?
theothornhill
Issue created from fantomas-online
Hi there, and thanks for
4.4.0Code
Result
Problem description
Fantomas throws an exception with an error message that looks unrelated to me. I would expect
fantomasto remove the extra space. I get a similar exception withExtra information
Options
Fantomas Master at 02/25/2021 08:33:56 - 9bc785c38d316c5e5b1bbdaeae04ed05b5ee8088
Default Fantomas configuration
Did you know that you can ignore files when formatting from fantomas-tool or the FAKE targets by using a .fantomasignore file?