I have long been annoyed that Scheme does not allow a program to be indented without changing its meaning, and was working on a comment to fix that, when I noticed that (I think) it has already been done in formal comment #9.
Am I right in thinking that the intention of the change described there is that (string=? "This is\ \ a string" "This is \ a string" "This is a string") must be true? (The response to comment #9 [1] confuses me.) Should not (page 13) <string element> -> ... | \<intraline whitespace> <line ending> <intraline whitespace> <intraline whitespace> -> <character tabulation> | <any character whose category is Zs> Have a Kleene star in there somewhere? E.g. either <string element> -> ... | \<intraline whitespace>* <line ending> <intraline whitespace>* or <intraline whitespace> -> ( <character tabulation> | <any character whose category is Zs> )* otherwise you are requiring exactly one space on each side of a line break within a string? [1] Formal comment #9: > However, there is no problem, since \<space> is useless - I see no > specification for an escape sequence that might need such a > terminator. > > RESPONSE: > > Agreed. The \<space> terminator was meant to work with > \<linefeed><intraline whitespace> in the case that the continuation > should start with a whitespace. However, \x escapes can serve that > purpose equally well. -- Keith _______________________________________________ r6rs-discuss mailing list r6rs-discuss@lists.r6rs.org http://lists.r6rs.org/cgi-bin/mailman/listinfo/r6rs-discuss