Re^2: Substituting a comma only when it is preceded and followed by a bracket

in reply to Re: Substituting a comma only when it is preceded and followed by a bracket
in thread Substituting a comma only when it is preceded and followed by a bracket

It does not work for nested parentheses:

$s='aa, aaa, aaaa, aaa, (aaa, aaa, aaa, a), aaa, aaa, (aaa, aaa, (aaa,
+ aa), aaa, aaa), aaa, aaa';
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The specification is unclear in this regard.

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Re^3: Substituting a comma only when it is preceded and followed by a bracket
by BrowserUk (Pope) on Nov 02, 2011 at 17:39 UTC

The specification is unclear in this regard.

I think the specification is very clear and has all the appearance of being thorough. I took it to be so.

Whilst is doesn't mention that there won't be nested parens, it also doesn't mention that the commas might one of the Unicode variants (eg.(U+060C)). Either would be a significant fact worthy of mention.

For example, what would you do with commas inside the outer parens, but outside the inner ones?

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Re^2: Substituting a comma only when it is preceded and followed by a bracket

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