So it would be useful for someone to compare the Perl 6 smartmatch table
as of February 2006 L<http://svn.perl.org/viewvc/perl6/doc/trunk/design/syn/S03.pod?view=markup&pathrev=7615>
and the current table L<http://svn.perl.org/viewvc/perl6/doc/trunk/design/syn/S03.pod?revision=14556&view=markup>
-and tabulate the differences in Perl 6. The diff is
+and tabulate the differences in Perl 6. The annotated view of changes is
+L<http://svn.perl.org/viewvc/perl6/doc/trunk/design/syn/S03.pod?view=annotate> and the diff is
C<svn diff -r7615:14556 http://svn.perl.org/perl6/doc/trunk/design/syn/S03.pod>
--- search for C<=head1 Smart matching>
+-- search for C<=head1 Smart matching>. (In theory F<viewvc> can generate that,
+but in practice when I tried it hung forever, I assume "thinking")
With that done and published, someone (else) can then map any changed Perl 6
semantics back to Perl 5, based on how the existing semantics map to Perl 5:
=back
-There is an implicit historical assumption, probably from Perl 1, that C<$cc>
-is also the correct command for linking object files together to make an
-executable. This may be true on Unix, but it's not true on other platforms,
-and there are a maze of work arounds in other places (such as F<Makefile.SH>)
-to cope with this.
+There is an implicit historical assumption from around Perl5.000alpha
+something, that C<$cc> is also the correct command for linking object files
+together to make an executable. This may be true on Unix, but it's not true
+on other platforms, and there are a maze of work arounds in other places (such
+as F<Makefile.SH>) to cope with this.
Ideally, we should create a new variable to hold the name of the executable
linker program, probe for it in F<Configure>, and centralise all the special
case logic there or in hints files.
A small bikeshed issue remains - what to call it, given that C<$ld> is already
-taken (arguably for the wrong thing) and C<$link> could be confused with the
-Unix command line executable of the same name, which does something completely
-different. Andy Dougherty makes the counter argument "In parrot, I tried to
-call the command used to link object files and libraries into an executable
-F<link>, since that's what my vaguely-remembered DOS and VMS experience
-suggested. I don't think any real confusion has ensued, so it's probably a
-reasonable name for perl5 to use."
+taken (arguably for the wrong thing now, but on SunOS 4.1 it is the command
+for creating dynamically-loadable modules) and C<$link> could be confused with
+the Unix command line executable of the same name, which does something
+completely different. Andy Dougherty makes the counter argument "In parrot, I
+tried to call the command used to link object files and libraries into an
+executable F<link>, since that's what my vaguely-remembered DOS and VMS
+experience suggested. I don't think any real confusion has ensued, so it's
+probably a reasonable name for perl5 to use."
"Alas, I've always worried that introducing it would make things worse,
since now the module building utilities would have to look for
C<$Config{link}> and institute a fall-back plan if it weren't found."
-
+Although I can see that as confusing, given that C<$Config{d_link}> is true
+when (hard) links are available.
=head1 Tasks that need a little C knowledge
projects / p5sagit/p5-mst-13.2.git / blobdiff