IllegalArgumentException while formatting

[phamtrinli]

This template is a guideline, not a strict requirement.

• Version: 1.4.0
• Integration: sbt, scalafmtOnCompile in ThisBuild := true
• Configuration:

style = IntelliJ
maxColumn = 120
align.openParenCallSite = true
align.openParenDefnSite = true
continuationIndent.defnSite = 2
danglingParentheses = false
docstrings = JavaDoc
importSelectors = singleLine
newlines.afterImplicitKWInVerticalMultiline = true
newlines.penalizeSingleSelectMultiArgList = false
rewrite.redundantBraces.stringInterpolation = true
rewrite.rules = [
  RedundantBraces,
  RedundantParens,
  PreferCurlyFors,
  SortImports
]
unindentTopLevelOperators = true
project.excludeFilters = [".*\\.sbt", "target/"]

Steps

Unfortunately sometimes an exception is thrown on code formatting (enabled on compile).

Problem

Exception occurs sometimes:

Caused by: java.lang.IllegalArgumentException: 109 is not a valid offset, allowed [0..0]
	at scala.meta.inputs.Point$Offset.<init>(Point.scala:33)
	at scala.meta.inputs.Point$Offset$.apply(Point.scala:30)
	at metaconfig.typesafeconfig.TypesafeConfig2Class$.$anonfun$getPositionOpt$6(TypesafeConfig2Class.scala:73)
	at scala.Option$WithFilter.map(Option.scala:146)
	at metaconfig.typesafeconfig.TypesafeConfig2Class$.$anonfun$getPositionOpt$2(TypesafeConfig2Class.scala:66)
	at scala.Option.flatMap(Option.scala:171)
	at metaconfig.typesafeconfig.TypesafeConfig2Class$.$anonfun$getPositionOpt$1(TypesafeConfig2Class.scala:65)
	at scala.Option.flatMap(Option.scala:171)
	at metaconfig.typesafeconfig.TypesafeConfig2Class$.getPositionOpt(TypesafeConfig2Class.scala:64)
	at metaconfig.typesafeconfig.TypesafeConfig2Class$.loop$1(TypesafeConfig2Class.scala:45)

Workaround

Usually another run of compile / format "fixes" the issue.

Notes

Using scalafmt in a play project. It seems that this exception occurs in sbt run task, maybe there is a problem with play's recompile mechanism?

[olafurpg]

Thanks for reporting! The error seems related to reading the configuration file. Did you by any chance recently update the .scalafmt.conf file before this happened? If so, this is likely fixed in #1145 where we upgraded the configuration library to a version where subsequent reads from the same file are not cached.

[olafurpg]

Please reopen if you are able to provide more detailed steps to reproduce