Re: [sv-bc] white space at the end of macro text

Reading #2 is the most likely intent, don't you think?
Macro text is a stream of tokens; string tokens among them.
The author wanted two stages of string-tokenization, one
before arg expansion and tick removal, and another
afterward.  But (s)he focused on the feature this delivers
(macro args expanding inside strings) and the lexical
means of indicating the delayed string's boundaries (`").


Bresticker, Shalom wrote:
> Brad has pointed out that SV 3.0 wrote:
> 
> "The macro text can also include an isolated quote, which must be preceded by a back tick, `". This allows
> macro arguments to be included in strings."
> 
> This is subtly different from what is written in 1800:
> 
> "An `" overrides the usual lexical meaning of " and indicates that the expansion should include an actual
> quotation mark. This allows string literals to be constructed from macro arguments."
> 
> What is written in 1800, "the usual lexical meaning", is not clear in this context.
> 
> In any case, the 3.0 text can be interpreted as implying:
> 
> 1. You don't need back ticks for the usual case of simple opening and closing quotation marks. This could be inferred from the phrase "an isolated quote".
> 
> 2. In a macro text definition, if quotation marks are preceded by back ticks, then macro arguments are expanded. However, if regular quotation marks are used, then macro arguments inside the quotation marks are not expanded. This could be inferred from the sentence, " This allows macro arguments to be included in strings." (I don't know what tools did on 1364 code.)
> 
> Shalom
> 
> ________________________________________
> From: owner-sv-bc@eda.org [mailto:owner-sv-bc@eda.org] On Behalf Of Bresticker, Shalom
> Sent: Wednesday, March 15, 2006 10:54 AM
> To: Brad Pierce; sv-bc@eda.org
> Subject: RE: [sv-bc] white space at the end of macro text
> 
> This may actually be a problem. If tools start requiring an apostrophe before opening and closing quotation marks in order to be compliant with what 1800 appears to require, that could invalidate tons of existing code.
> 
> Shalom
> 
> ________________________________________
> From: owner-sv-bc@eda.org [mailto:owner-sv-bc@eda.org] On Behalf Of Brad Pierce
> Sent: Sunday, February 12, 2006 11:16 PM
> To: sv-bc@eda.org
> Subject: Re: [sv-bc] white space at the end of macro text
> 
> And, according to the standard, the quotation marks need to be escaped, although in practice many tools do not require that.
> 
>     (* foo = `"AA``arg1``BB``arg2`" *) \
> 
> -- Brad
> 
> 
> 
> 
>