RFR: 8356684: jpackage error messages are not helpful [v3]

[Alexander Matveev]

On Wed, 14 Jan 2026 02:41:13 GMT, Alexey Semenyuk <asemenyuk at openjdk.org> wrote:

>> If the output of an external command execution results in a fatal error, jpackage will print the command line of the external command. In quiet mode (without "--vrebose"), it will also print the command's output.
>> 
>> E.g. (unit test output):
>> 
>> jpackage --input MainTest\testFailedCommandOutput\input --dest MainTest\testFailedCommandOutput\output --name FailedCommandOutputMainTest --type app-image --main-jar hello.jar --main-class Hello --win-console
>> Error: Unexpected exit code 17 from executing the command jlink-mock --output MainTest\testFailedCommandOutput\output\FailedCommandOutputMainTest\runtime --module-path runtime\jmods --add-modules java.base,jdk.xml.dom,jdk.zipfs --strip-native-commands --strip-debug --no-man-pages --no-header-files
>> Command output:
>> It
>> fell
>> apart
>
> Alexey Semenyuk has updated the pull request incrementally with one additional commit since the last revision:
> 
>   ExecutableAttributesWithCapturedOutput: augmenResultWithOutput() -> augmentResultWithOutput()

Marked as reviewed by almatvee (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/29197#pullrequestreview-3658623991