On Mon, 07 Nov 2016 16:29:40 GMT, jkeenan wrote: > On Mon, 07 Nov 2016 13:47:55 GMT, jkeenan wrote: > > > > The question is: What is it about this the pattern: > > > > ##### > > /([^\S\x{202f}\x{00a0}]+)|(\p{InFullwidth})|((?:[^\s\p{InFullwidth}]|[\x{202f}\x{00a0}])+)/ > > ##### > > > > ... that (a) as of commit C<a5540cf> but not previously; and (b) in > > the context of this test suite but not in isolation, perceives > > something to be a read-only value not subject to modification? > > My next brainstorm: Add "use re 'debug';" to sub add_text() in > tp/Texinfo/Convert/ParagraphNonXS.pm. > > When I did so and ran the debugging program found in one of my > previous attachments, I got this output: > > ##### > Texinfo::Convert::ParagraphNonXS::add_text(../../tp/Texinfo/Convert/ParagraphNonXS.pm:329): > 329: my @segments = split > 330: > /([^\S\x{202f}\x{00a0}]+)|(\p{InFullwidth})|((?:[^\s\p{InFullwidth}]|[\x{202f}\x{00a0}])+)/, > 331: $text; > DB<6> n > Matching REx > "([^\S\x{202f}\x{00a0}]+)|(\p{InFullwidth})|((?:[^\s\p{InFull"... > against "This is " > 0 <> <This is > | 0| 1:BRANCH(18) > 0 <> <This is > | 1| 2:OPEN1(4) > 0 <> <This is > | 1| 4:PLUS(16) > | 1| ANYOF[\t\n\x0B\f\r \x85][1680 > 2000-200A 2028-2029 205F 3000] can match 0 times out of 2147483647... > | 1| failed... > 0 <> <This is > | 0| 18:BRANCH(34) > 0 <> <This is > | 1| 19:OPEN2(21) > 0 <> <This is > | 1| > 21:ANYOF[+utf8::Texinfo::Convert::ParagraphNonXS::InFullwidth](32) > | 1| failed... > 0 <> <This is > | 0| 34:BRANCH(68) > 0 <> <This is > | 1| 35:OPEN3(37) > 0 <> <This is > | 1| 37:CURLYM[0]{1,INFTY}(66) > 0 <> <This is > | 2| 39:BRANCH(51) > 0 <> <This is > | 3| 40:ANYOF[^\t\n\x0B\f\r > \x85\xA0{+utf8::Texinfo::Convert::ParagraphNonXS::InFullwidth}1680 > 2000-200A 2028-2029 202F 205F 3000](64) > Modification of a read-only value attempted at > ../../tp/Texinfo/Convert/ParagraphNonXS.pm line 329. > at ../../tp/Texinfo/Convert/ParagraphNonXS.pm line 329. > Texinfo::Convert::ParagraphNonXS::add_text(Texinfo::Convert::ParagraphNonXS=HASH(0x35ba938), > "This is ") called at ../../tp/Texinfo/Convert/Info.pm line 308 > Texinfo::Convert::Info::_info_header(Texinfo::Convert::Info=HASH(0x35b3038)) > called at ../../tp/Texinfo/Convert/Info.pm line 81 > Texinfo::Convert::Info::output(Texinfo::Convert::Info=HASH(0x35b3038), > HASH(0x35ab7c0)) called at ../texi2any.pl line 1348 > panic: POPSTACK > Debugged program terminated. > ##### > > Since I have never previously used the regex debugger, I have no idea > if there are any clues to a solution in that output. > Compiling perl at what has been identified as the last good commit, and then running the test program through the debugger, I got much better output. It's quite long, so I'm posting it here: https://gist.github.com/jkeenan/184d2aaf914e4aa0410fe2ea1f36da91 Thank you very much. -- James E Keenan (jkeenan@cpan.org) --- via perlbug: queue: perl5 status: open https://rt.perl.org/Ticket/Display.html?id=130010Thread Previous | Thread Next