"clang -cc1 -plugin help" does not list available options

[llvmbot]

Bugzilla Link	9501
Version	trunk
OS	Linux
Reporter	LLVM Bugzilla Contributor
CC	@yuanfang-chen

Extended Description

From clang -cc1 -help output:

"-plugin Use the named plugin action instead of the default action (use "help" to list available options)"

However, invocation of "clang -cc1 -plugin help" results in "error: unable to find plugin 'help'"

[Endilll]

Nothing has changed since then:

$ clang -cc1 -help
...
-plugin <name>          Use the named plugin action instead of the default action (use "help" to list available options)

$ clang -cc1 -plugin help
error: unable to find plugin 'help'

$ clang --version
Debian clang version 17.0.0 (++20230507100829+b774f14841a2-1~exp1~20230507220950.1283)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin

[llvmbot]

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