[Ur] Proposed location literals to track caller's location in error msgs.

[Gabriel Riba]

Here comes the mercurial patch with both the _LOC_ in urweb.lex and the 
"assert" function in top.ur

El 03/06/15 a les 14:43, Adam Chlipala ha escrit:
>
>> BTW, "let ... where ... end" is not documented in the reference manual.
>
> No, it's there, on page 19 of the current version.

It is not in the "4.2 Core syntax" section, expression production,

I see that it is in the next "4.3 Shorthands" section that requires a 
more attentive reading.



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