Yes, contributions to the docs are always welcome. In particular, we should make it clear in Regex.compile that entries must be double escaped or a sigil like ~S must be used to avoid confusion.
On Monday, June 6, 2016, Johnny Winn <[email protected]> wrote: > José, > > I figured that was what was happening but looking at the code/tests/docs > it isn't clear that's what is supposed to happen. Maybe it's a lesser issue > but some clarification in the docs/tests might help for next time and I > wouldn't mind contributing if you're open to that. > > Thanks, > Johnny > > > On Mon, Jun 6, 2016 at 2:59 PM, Onorio Catenacci <[email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > >> Thanks José. This is why I asked before submitting a bug. >> >> On Mon, Jun 6, 2016 at 2:50 PM, José Valim < >> [email protected] >> <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: >> >>> If you call Regex.compile, then you are passing a string which means \w >>> must now be \\w. If you just pass \w, you can see how it becomes simply w, >>> because \ was discarded by the *string* and never made to the regex compile. >>> >>> Since \d represents the delete escape character, it becomes the >>> codepoint 007F before it ever enters the regex and so the regex needs to >>> escape it using \x to avoid ambiguity with its own \d, so not a bug. :) >>> >>> On Monday, June 6, 2016, Onorio Catenacci <[email protected] >>> <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: >>> >>>> Yeah I think you've hit on the problem Johnny. It does appear the \d >>>> is the issue. >>>> >>>> iex(10)> {:ok, rc} = Regex.compile("\d") >>>> {:ok, ~r/\x7F/} >>>> iex(11)> {:ok, rc} = Regex.compile("\w") >>>> {:ok, ~r/w/} >>>> >>>> As I say, I can certainly do this without having to compile the regex >>>> but it sure looks like a bug (albeit a minor one as far as I can tell). >>>> >>>> -- >>>> Onorio >>>> >>>> >>>> On Mon, Jun 6, 2016 at 2:37 PM, Johnny Winn <[email protected]> wrote: >>>> >>>>> This would be a bug from what I can see. the `\` seems to be giving >>>>> `Regex.compile/1` a fit. >>>>> >>>>> On a mac, Elixir 1.2.5: >>>>> >>>>> iex(1)> {:ok, rc} = Regex.compile("(?<version>\d+.\d+.\d+.\d+)*$") >>>>> {:ok, ~r/(?<version>\x7F+.\x7F+.\x7F+.\x7F+)*$/} >>>>> iex(2)> {:ok, rc} = Regex.compile("(?<version>\d+.\w+.\w+.\w+)*$") >>>>> {:ok, ~r/(?<version>\x7F+.w+.w+.w+)*$/} >>>>> >>>>> If Jose is ok with you submitting the bug, I can take a look at it :) >>>>> >>>>> ~ Johnny >>>>> >>>>> On Mon, Jun 6, 2016 at 2:28 PM, Onorio Catenacci <[email protected]> >>>>> wrote: >>>>> >>>>>> Hi all, >>>>>> >>>>>> Not sure if this is a bug or simply me misunderstanding the mechanism >>>>>> of regex's. I hope no one minds me asking about this here so I don't >>>>>> file >>>>>> a bug if it's just a misunderstanding on my part. >>>>>> >>>>>> On Windows 10 with Elixir 1.2.6, I've been working on a regex to pull >>>>>> the version portion of a string. This works: >>>>>> >>>>>> iex(4)> v = >>>>>> Regex.named_captures(~r/(?<version>\d+.\d+.\d+.\d+)*$/,"Version=15.0.4815.1002") >>>>>> %{"version" => "15.0.4815.1002"} >>>>>> iex(5)> v >>>>>> %{"version" => "15.0.4815.1002"} >>>>>> iex(6)> v["version"] >>>>>> "15.0.4815.1002" >>>>>> >>>>>> But as I was playing with the regex, I found this which struck me as >>>>>> sort of curious: >>>>>> >>>>>> iex(7)> {:ok, rc} = Regex.compile("(?<version>\d+.\d+.\d+.\d+)*$") >>>>>> {:ok, ~r/(?<version>\x7F+.\x7F+.\x7F+.\x7F+)*$/} >>>>>> iex(8)> rc >>>>>> ~r/(?<version>\x7F+.\x7F+.\x7F+.\x7F+)*$/ >>>>>> >>>>>> Which when I try with named_captures gives me this: >>>>>> >>>>>> iex(9)> v = Regex.named_captures(rc,"Version=15.0.4815.1002") >>>>>> %{"version" => ""} >>>>>> >>>>>> Knowing this is Windows 10 and knowing the issues we've had with >>>>>> unicode over the years, I ran chcp 65001. The problem still occurs. >>>>>> It's a >>>>>> minor issue because as you can see, I've got a working regex. >>>>>> >>>>>> So am I misunderstanding something or is this a bug? Any advice >>>>>> would be appreciated. >>>>>> >>>>>> -- >>>>>> Onorio >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "elixir-lang-core" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to [email protected]. >>>>>> To view this discussion on the web visit >>>>>> https://groups.google.com/d/msgid/elixir-lang-core/d921ceaf-de00-4137-ac6e-dc11209d3db8%40googlegroups.com >>>>>> <https://groups.google.com/d/msgid/elixir-lang-core/d921ceaf-de00-4137-ac6e-dc11209d3db8%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>> . >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to a topic in the >>>>> Google Groups "elixir-lang-core" group. >>>>> To unsubscribe from this topic, visit >>>>> https://groups.google.com/d/topic/elixir-lang-core/7KxqS9FW5vw/unsubscribe >>>>> . >>>>> To unsubscribe from this group and all its topics, send an email to >>>>> [email protected]. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/d/msgid/elixir-lang-core/CALBtUW6aTpPG3rNsmNEzCdxvtwyyfQVhANYvdpvORF%2Bb7XCqCw%40mail.gmail.com >>>>> <https://groups.google.com/d/msgid/elixir-lang-core/CALBtUW6aTpPG3rNsmNEzCdxvtwyyfQVhANYvdpvORF%2Bb7XCqCw%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> >>>> >>>> -- >>>> Onorio Catenacci >>>> >>>> http://onor.io >>>> http://www.google.com/+OnorioCatenacci >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "elixir-lang-core" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/elixir-lang-core/CAP%3DvNq8KzoK_hBq8RxyOUEUSUCaWUcN6kifMGAvfRidQ2AZPdg%40mail.gmail.com >>>> <https://groups.google.com/d/msgid/elixir-lang-core/CAP%3DvNq8KzoK_hBq8RxyOUEUSUCaWUcN6kifMGAvfRidQ2AZPdg%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>> . >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >>> -- >>> >>> >>> *José Valim* >>> www.plataformatec.com.br >>> Skype: jv.ptec >>> Founder and Director of R&D >>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "elixir-lang-core" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/elixir-lang-core/7KxqS9FW5vw/unsubscribe >>> . >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected] >>> <javascript:_e(%7B%7D,'cvml','elixir-lang-core%[email protected]');> >>> . >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/elixir-lang-core/CAGnRm4JQXDM-9pPZu4kHzyUk2-rTQVA6Ge-4shyEN%3D0jd-k7qw%40mail.gmail.com >>> <https://groups.google.com/d/msgid/elixir-lang-core/CAGnRm4JQXDM-9pPZu4kHzyUk2-rTQVA6Ge-4shyEN%3D0jd-k7qw%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> Onorio Catenacci >> >> http://onor.io >> http://www.google.com/+OnorioCatenacci >> >> -- >> You received this message because you are subscribed to the Google Groups >> "elixir-lang-core" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] >> <javascript:_e(%7B%7D,'cvml','elixir-lang-core%[email protected]');> >> . >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/elixir-lang-core/CAP%3DvNq8kkLDh%3D-%3DQ%2BGDhNdCCuQgbNnr95Rf5wUh5AmETURE5dA%40mail.gmail.com >> <https://groups.google.com/d/msgid/elixir-lang-core/CAP%3DvNq8kkLDh%3D-%3DQ%2BGDhNdCCuQgbNnr95Rf5wUh5AmETURE5dA%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "elixir-lang-core" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <javascript:_e(%7B%7D,'cvml','elixir-lang-core%[email protected]');> > . > To view this discussion on the web visit > https://groups.google.com/d/msgid/elixir-lang-core/CALBtUW5VWcm6fJF_4GAd4-9v1PcnELY-FAdht1VG%2BtGTx%3DK4Hg%40mail.gmail.com > <https://groups.google.com/d/msgid/elixir-lang-core/CALBtUW5VWcm6fJF_4GAd4-9v1PcnELY-FAdht1VG%2BtGTx%3DK4Hg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- *José Valim* www.plataformatec.com.br Skype: jv.ptec Founder and Director of R&D -- You received this message because you are subscribed to the Google Groups "elixir-lang-core" group. 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