G'day perlancar,

Noting the "use 5.020000;" in your code, and the versions you used for testing, I attempted to replicate your results using a variety of versions. Unfortunately, other than "use 5.020000;" correctly barring a 5.18.0 test, pretty much everything else blew up in my face.

My CSelTest.pm is a [download] copy of your posted code. I ran the tests like this: 

$ perl -MCSelTest -MData::Dump -E 'dd CSelTest::parse(q{ [attr] })'

[download]

Here's the results:

v5.18.0 : darwin-thread-multi-2level

Successfully tested: use VERSION 

Perl v5.20.0 required--this is only v5.18.0, stopped at CSelTest.pm li
+ne 3.
BEGIN failed--compilation aborted at CSelTest.pm line 3.
Compilation failed in require.
BEGIN failed--compilation aborted.

[download]
v5.20.0 : darwin-thread-multi-2level
v5.20.2 : darwin-thread-multi-2level

Both tests unsuccessful. Result: PANIC! 

panic: memory wrap at CSelTest.pm line 107.
Compilation failed in require.
BEGIN failed--compilation aborted.

[download]
v5.22.0 : darwin-thread-multi-2level
v5.24.0 : darwin-thread-multi-2level

Both tests unsuccessful. Result: FATAL! 

Switch (?(condition)... not terminated in regex; marked by <-- HERE in
+ m/
          (?&ATTR_SELECTOR) (?{ $_ = $^R->[1] })

          (?(DEFINE)

          ...

          ) # DEFINE
   <-- HERE / at CSelTest.pm line 107.
Compilation failed in require.
BEGIN failed--compilation aborted.

[download]

I suspect some sort of copy/paste error; please address.

Here's another possible copy/paste error: 

% perl -I. -Ilib -MCSelTest -MData::Dump -E'dd( CSelTest::parse_csel(q
+{ [attr=1] }) )'
[[{ name => "attr" }], "eq", 1]

[download]

That's the same output as the next test with [attr eq 1]. For [attr=1], I would've expected '"="', rather than '"eq"', in the output; i.e. 

% perl -I. -Ilib -MCSelTest -MData::Dump -E'dd( CSelTest::parse_csel(q
+{ [attr=1] }) )'
[[{ name => "attr" }], "=", 1]

[download]

— Ken

In reply to Re: Weirdness (duplicated data) while building result during parsing using regex by kcott
in thread Weirdness (duplicated data) while building result during parsing using regex by perlancar

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