RFR: 7903601 : jtr.xml logs produced with -xml argument do not contain failure justification [v2]

[Jonathan Gibbons]

On Sat, 9 Dec 2023 07:30:42 GMT, andrlos <duke at openjdk.org> wrote:

>> or `if (Set.of("main", "shell").contains(titles[i]))` or equivalent
>
> fixed.. I did not know if there is any chance of jtharness producing both Main and Shell section in the log in some corner cases, so I decided to play it safe and made the Shell section as a fallback option when no Main section is found.

FYI, a "section" contains the output for an "action" in the test description, so a test description containing a sequence or mix of `@run main` and `@run shell` actions will generate corresponding sections in the `.jtr` file.

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PR Review Comment: https://git.openjdk.org/jtreg/pull/175#discussion_r1421436731