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Re: LAC (lookahead correction) for syntax error handling
From: |
Joel E. Denny |
Subject: |
Re: LAC (lookahead correction) for syntax error handling |
Date: |
Sat, 12 Feb 2011 09:04:30 -0500 (EST) |
User-agent: |
Alpine 2.00 (DEB 1167 2008-08-23) |
On Sat, 29 Jan 2011, Joel E. Denny wrote:
> Also, there is another problem with syntax error messages that we've
> discussed before and that LAC might expose further. Sometimes, when it
> seems LAC should correct the expected token list in a syntax error
> message, both the unexpected token and the expected token list are simply
> dropped.
Oops. The unexpected token is still reported. Only the expected token
list is dropped.
> The problem here is that, for the sake of translation, the
> expected token list is limited to 4 tokens. I'm thinking the user ought
> to be able to control the limit, possibly removing the limit entirely.
> Surely we can find some way to handle the translation issues.
>
> In any case, unless there's a simple fix, I don't expect to address this
> in 2.5, but I should probably document it. NEWS should probably at least
> mention that there are some minor caveats to read about in the manual.
- Re: LAC (lookahead correction) for syntax error handling,
Joel E. Denny <=