You don't need to use re-matcher in that example - the output of re-find
with the regex and the string is identical. If you are using the matcher to
collect a series of matches in one string, you can also uses re-seq which
returns a lazy-seq of the matches of your regex in the string.

On Tue, Dec 4, 2018 at 12:37 PM Randy J. Ray <rj...@blackperl.com> wrote:

> Oh, that might be it. The newline at the end of the string might be what
> is throwing a wrench into things. Though, to be fair, when I used
> re-matches yesterday the newline wasn't an issue.
>
> Nonetheless, I can work with re-find/re-matcher for now.
>
> On Tue, Dec 4, 2018 at 11:28 AM Andy Fingerhut <andy.finger...@gmail.com>
> wrote:
>
>> The doc string for re-matches says that it
>> uses java.util.regex.Matcher.matches().  The Java doc page for the class
>> java.util.regex.Matcher [1] says "The matches
>> <https://docs.oracle.com/javase/8/docs/api/java/util/regex/Matcher.html#matches-->
>>  method
>> attempts to match the entire input sequence against the pattern."
>>
>> The doc string for re-find says that it
>> uses java.util.regex.Matcher.find().  On [1] you can find the statement "
>> The find
>> <https://docs.oracle.com/javase/8/docs/api/java/util/regex/Matcher.html#find-->
>>  method
>> scans the input sequence looking for the next subsequence that matches the
>> pattern."
>>
>> I haven't dug into your regex and string in detail, but most likely what
>> is happening is that the regex matches part of the string, but it doesn't
>> match the _entire_ string.
>>
>> Andy
>>
>> [1]
>> https://docs.oracle.com/javase/8/docs/api/java/util/regex/Matcher.html
>>
>>
>>
>>
>> On Tue, Dec 4, 2018 at 11:16 AM Randy J. Ray <rj...@blackperl.com> wrote:
>>
>>> I must be doing something wrong here, but I cannot figure this out.
>>>
>>> The following results in "nil" from re-matches:
>>>
>>> (re-matches #"\[((\d+)-(\d+)-(\d+) (\d\d):(\d\d))\] (.*)" "[1518-05-27
>>> 00:42] falls asleep\n")
>>>
>>> This, however, properly matches the line and produces the backreferences:
>>>
>>> (re-find (re-matcher #"\[((\d+)-(\d+)-(\d+) (\d\d):(\d\d))\] (.*)"
>>> "[1518-05-27 00:42] falls asleep\n"))
>>>
>>> I've used re-matches many times, but this has me stumped. This is
>>> behaving this way on both 1.8.0 and 1.9.0.
>>>
>>> Randy
>>> --
>>> Randy J. Ray - randy.j....@gmail.com - twitter.com/rjray
>>> Silicon Valley Scale Modelers: http://www.svsm.org
>>> Sunnyvale, CA
>>>
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>
>
> --
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> Silicon Valley Scale Modelers: http://www.svsm.org
> Sunnyvale, CA
>
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