[GROOVY-698] Here-docs should allow spaces after initial token (and better errors when unterminated)

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 1.0-beta-7, 1.0-beta-8
• Fix Version/s: 1.0-JSR-2
• Assignee: sstirling
• Reporter: Mark Igra
• Created: 09/Jan/05 20:42
• Updated: 07/Jun/05 07:07
• Resolved: 07/Jun/05 07:06

Description

Here-docs seem to treat the entire text from <<< to the end of the line as the token. It can be very difficult to find this bug with the lack of a line number on the error message. I.e.

Code like this:

print(<<<EOS
hello
EOS);

which contains a hidden space after the <<<EOS, yields this error message

Caught: C:\projects\groovy-1.0-beta-8\test2.groovy: -1: expected ")"; found '' at -1:-1

The lack of any line number makes this very difficult to track down in a large file.

Spaces after the opening here-doc token seem to be legal in my version of perl (5.8.x) – though not spaces before the closing token, which would be a nice addition that should be in perl 6.

Also would be nice if the docs noted the rules about here-docs. I'd be happy to fix those if someone tells me the desired functionality.