On Friday, June 28, 2013 9:51:20 AM UTC+9, mattn wrote:
> This break sub-match references.
> 
> echomsg substitute('2013-06-27${0}', 
> '\%#=0\\\@<!\${\(\d\+\%(:.\{-}\)\?\\\@<!\)}', ' \1 ', 'g')
> E43: Damaged match string
> 2013-06-27 0}
> 
> echomsg substitute('2013-06-27${0}', 
> '\%#=1\\\@<!\${\(\d\+\%(:.\{-}\)\?\\\@<!\)}', ' \1 ', 'g')
> 2013-06-27 0

After applying this patch

echomsg substitute('2013-06-27${0}', 
'\%#=0\\\@<!\${\(\d\+\%(:.\{-}\)\?\\\@<!\)}', ' \1 ', 'g')
2013-06-27

echomsg substitute('2013-06-27${0}', 
'\%#=1\\\@<!\${\(\d\+\%(:.\{-}\)\?\\\@<!\)}', ' \1 ', 'g')
2013-06-27 0

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