Fixed issue 36: Illegal argument: character must be non-negative #37
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If the W3C violation occurs in the first character of the file, e.g. if the file references a legacy doctype,
message.hiliteStart
will be 0, andmessage.hiliteStart-1
will be negative, causing the errorIllegal argument: character must be non-negative
. This was a quick fix: instead of passingmessage.hiliteStart-1
directly as a parameter ofvscode.Position
, passMath.max(message.hiliteStart-1,0)
, which forces the character to be nonnegative.