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
>>
>>
>>
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--
Onorio Catenacci
http://onor.io
http://www.google.com/+OnorioCatenacci
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