From mail at dries.net  Wed Aug 13 17:59:48 2025
From: mail at dries.net (Dries Samyn)
Date: Wed, 13 Aug 2025 18:59:48 +0100
Subject: Bug in -jvmArgs parsing?
Message-ID: <CA+NrA8g9T8U9B46a625cZYrNawB6i5A9AkbniN9V1TkmV1C_xA@mail.gmail.com>

I'm not sure this is considered a bug as it matches the documented
behaviour, but I can't think of a clean workaround if it is.

I believe arguments passed into the -jvmArgs option are space delimited.
However, this is problematic when those arguments include spaces as part of
the value.
For example, I am trying to create a custom profiler for YourKit
integration, but the YourKit agent, by default, has spaces in its path on
MacOs, which means trying to pass it in the jvmArgs option is problematic.

I have created a reproduction of the issue and explanation here:
https://github.com/driessamyn/jmh-spaces-bug-reproduction

Looking forward to hearing thoughts on this.

Dries.
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From kirk.pepperdine at gmail.com  Thu Aug 14 07:08:33 2025
From: kirk.pepperdine at gmail.com (Kirk Pepperdine)
Date: Thu, 14 Aug 2025 09:08:33 +0200
Subject: Bug in -jvmArgs parsing?
In-Reply-To: <CA+NrA8g9T8U9B46a625cZYrNawB6i5A9AkbniN9V1TkmV1C_xA@mail.gmail.com>
References: <CA+NrA8g9T8U9B46a625cZYrNawB6i5A9AkbniN9V1TkmV1C_xA@mail.gmail.com>
Message-ID: <F0623DEE-DDBD-4702-9160-93319821182F@gmail.com>

Hi Dries,

Have you tried escaping the spaces to that the shell doesn?t split the value?

Kind regards,
Kirk


> On Aug 13, 2025, at 7:59?PM, Dries Samyn <mail at dries.net> wrote:
> 
> I'm not sure this is considered a bug as it matches the documented behaviour, but I can't think of a clean workaround if it is.
> 
> I believe arguments passed into the -jvmArgs option are space delimited. However, this is problematic when those arguments include spaces as part of the value.
> For example, I am trying to create a custom profiler for YourKit integration, but the YourKit agent, by default, has spaces in its path on MacOs, which means trying to pass it in the jvmArgs option is problematic.
> 
> I have created a reproduction of the issue and explanation here: https://github.com/driessamyn/jmh-spaces-bug-reproduction
> 
> Looking forward to hearing thoughts on this.
> 
> Dries.
> 

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From mail at dries.net  Fri Aug 15 06:31:24 2025
From: mail at dries.net (Dries Samyn)
Date: Fri, 15 Aug 2025 07:31:24 +0100
Subject: Bug in -jvmArgs parsing?
Message-ID: <CA+NrA8if+WKu_e=j3gix8Y=nyEdOi0KZxb+qzK7xBGg+2Y1F5Q@mail.gmail.com>

Hi Kirk,

I don't think it is the shell that is splitting the value as the jvmArgs is
quoted, I think it is when the argument is parsed.
I tried \ escaping the spaces as well.

java -jar build/libs/jmh-spaces-bug-reproduction-jmh.jar \
  -jvmArgs "-javaagent:/tmp/agent with spaces/dummy.jar"

java -jar build/libs/jmh-spaces-bug-reproduction-jmh.jar \
  -jvmArgs "-javaagent:/tmp/agent\ with\ spaces/dummy.jar"

I can see the the description of the flag suggest it is a space
space-separated line, which makes me think this is intended behaviour,
however, I cannot understand how a value containing spaces can then be used:

  -jvmArgs <string>           Use given JVM arguments. Most options are
inherited
                              from the host VM options, but in some cases
you want
                              to pass the options only to a forked VM.
Either single
                              space-separated option line, or multiple
options
                              are accepted. This option only affects forked
runs.


Dires.

On Thu, 14 Aug 2025, 8:08?am Kirk Pepperdine, <kirk.pepperdine at gmail.com>
wrote:

> Hi Dries,
>
> Have you tried escaping the spaces to that the shell doesn?t split the
> value?
>
> Kind regards,
> Kirk
>
>
> On Aug 13, 2025, at 7:59?PM, Dries Samyn <mail at dries.net> wrote:
>
> I'm not sure this is considered a bug as it matches the documented
> behaviour, but I can't think of a clean workaround if it is.
>
> I believe arguments passed into the -jvmArgs option are space delimited.
> However, this is problematic when those arguments include spaces as part of
> the value.
> For example, I am trying to create a custom profiler for YourKit
> integration, but the YourKit agent, by default, has spaces in its path on
> MacOs, which means trying to pass it in the jvmArgs option is problematic.
>
> I have created a reproduction of the issue and explanation here:
> https://github.com/driessamyn/jmh-spaces-bug-reproduction
>
> Looking forward to hearing thoughts on this.
>
> Dries.
>
>
>
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From mikhael.bogdanov at gmail.com  Wed Aug 27 06:06:27 2025
From: mikhael.bogdanov at gmail.com (Michael Bogdanov)
Date: Wed, 27 Aug 2025 09:06:27 +0300
Subject: Adding release changes history file into project repository
Message-ID: <CAMBQAa9+M56Qtz9qQbxpOjjp+A2UE9YWs3kjgzDUQHicB=eReg@mail.gmail.com>

Please consider adding the release changes history file into the project
repository.
It would be valuable to have this information in one place, especially for
migration from one jmh version to another one.

-- 
Best Regards,
   Mike Bogdanov
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From sitnikov.vladimir at gmail.com  Wed Aug 27 06:29:57 2025
From: sitnikov.vladimir at gmail.com (Vladimir Sitnikov)
Date: Wed, 27 Aug 2025 09:29:57 +0300
Subject: Adding release changes history file into project repository
In-Reply-To: <CAMBQAa9+M56Qtz9qQbxpOjjp+A2UE9YWs3kjgzDUQHicB=eReg@mail.gmail.com>
References: <CAMBQAa9+M56Qtz9qQbxpOjjp+A2UE9YWs3kjgzDUQHicB=eReg@mail.gmail.com>
Message-ID: <CAB=Je-FJFOqy2xxze+Rb7gUyY=_bsD-u0yn16fOUyAr33FFL0Q@mail.gmail.com>

I wonder if the releases could be described in GitHub releases.
It might be a good enough alternative for a changelog file.

Vladimir
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