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Postings from August 2010
On Thu, 05 Aug 2010 12:31:42 -0600, karl williamson <public@khwilliamson.com> wrote: > H.Merijn Brand wrote: : > > Assuming that the . is the same as the _ in the other thread, ... > > > > No, as it is not a syntax error at the moment: > > > > $ perl -we'$a =~ m/foo/i_Cu' > > Bareword found where operator expected at -e line 1, near "m/foo/i_Cu" > > syntax error at -e line 1, next token ??? > > $ perl -we'$a =~ m/foo/i.Cu' > > Useless use of concatenation (.) or string in void context at -e line 1. > > Name "main::a" used only once: possible typo at -e line 1. > > > > in the bottom example, the . is interpreted as a concatenation. > > > >> so will use that in the examples.) (?.:foo) would mean this cluster > >> does not inherit the surrounding flags, but uses the /perl/ default > >> ones. (.x:foo) means this cluster does not inherit the surrounding > >> flags, but uses the /perl/ default ones, but also the x modifier is > >> selected, whether or not it is a /perl/ default. > >> > >> Whatever the user has chosen to be the default, it will be shown in the > >> stringification iff it differs from the /perl/ default. > > > You misunderstood. We are talking about two different things. One > thing is new regex modifiers and what they should be; that is a > different thread. The other thing in this thread is using some > character to symbolize "use the default options" in the stringification > of a regex. What I was proposing was that the latter be a '.'. It > would only be valid immediately after the '?' in the > (?.posflags-negflags:foo) construct. It would not be valid in suffixes. > > I had originally proposed it being an underscore, Ben, whose idea it > was, thought of a tilde. This is not related to the idea of using an > underscore in "m/foo/i_Cu" to add clarity to the suffix (and perhaps > infix) modifiers, except that that if we have underscore mean two > different things, it would be confusing, so I'm withdrawing my original > suggestion in favor of using a dot instead, which is illegal currently > in the proposed context. Thanks for clearing that up. I understand and agree -- H.Merijn Brand http://tux.nl Perl Monger http://amsterdam.pm.org/ using 5.00307 through 5.12 and porting perl5.13.x on HP-UX 10.20, 11.00, 11.11, 11.23, and 11.31, OpenSuSE 10.3, 11.0, and 11.1, AIX 5.2 and 5.3. http://mirrors.develooper.com/hpux/ http://www.test-smoke.org/ http://qa.perl.org http://www.goldmark.org/jeff/stupid-disclaimers/Thread Previous | Thread Next