Fix detection of the implicit help option - #1371
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Signed-off-by: David Pilar <david@czpilar.net>
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Resolves #1370
isHelp()now ignores options the command declares itself, so a declared-his no longer hijacked as help. The dispatch condition is relaxed fromoptions.size() == 1toanyMatch, so help is honoured alongside other options - the two defects cannot be fixed separately, see the issue for why.Case sensitivity
isHelp()also matched the long form case-insensitively, unlike every other option comparison in the codebase. This PR changes it to"help".equals(...), so--HELPis no longer treated as help. Repro and details in #1370.The alternative - making the long form consistently case-insensitive - would imply
-His help, and-His an established distinct flag elsewhere (curl -H,grep -H,ls -H), which is exactly the hijack this PR fixes. Nothing documents the uppercase spelling: the built-in help prints--help or -hfor every command, and the reference docs mention only--help/-h.Note on the dispatch condition
commands/help.adocalready states that help short-circuits execution "regardless what other command-line options are typed", so relaxingoptions.size() == 1toanyMatchbrings the code in line with documented behaviour rather than changing it.