Replace `ifNil:[...]` with `isNil ifTrue:[...]`
The latter is optimized by compilers and therefore faster.
"{ Package: 'stx:goodies/petitparser' }"
"{ NameSpace: Smalltalk }"
PPParser subclass:#PPStartOfLineParser
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'PetitParser-Parsers'
!
!PPStartOfLineParser methodsFor:'parsing'!
parseOn: aPPContext
(aPPContext isStartOfLine) ifTrue: [
^ #startOfLine
].
^ PPFailure message: 'Start of line expected' context: aPPContext at: aPPContext position
! !
!PPStartOfLineParser class methodsFor:'documentation'!
version_HG
^ '$Changeset: <not expanded> $'
! !