RFR(M): 8189102: All tools should support -?, -h and --help

[Vladimir Kozlov]

You missed AOT tool jaotc:

http://hg.openjdk.java.net/jdk10/hs/file/44117bc2bedf/src/jdk.aot/share/classes/jdk.tools.jaotc/src/jdk/tools/jaotc/Options.java#l230

     }, new Option("  --help                     Print this usage message", false, "--help", "-h", "-?") {

Vladimir

On 10/11/17 1:06 PM, Lindenmaier, Goetz wrote:
> Hi
> 
> The tools in jdk should all show the same behavior wrt. help flags.
> This change normalizes the help flags of a row of the tools in the jdk.
> Java accepts -?, -h and --help, thus I changed the tools to support
> these, too.  Some tools exited with '1' after displaying the help message,
> I turned this to '0'.
> 
> Maybe this is not the right mailing list for this, please advise.
> 
> Please review this change. I please need a sponsor.
> http://cr.openjdk.java.net/~goetz/wr17/8189102-helpMessage/webrev.01/
> 
> In detail, this fixes the help message of the following tools:
> jar          -? -h --help;  added -?.
> jarsigner    -? -h --help;  added --help. -help accepted but not documented.
> javac        -?    --help;  added -?. Removed -help. -h is taken for other purpose
> javadoc      -? -h --help;  added -h -?. Removed -help
> javap        -? -h --help;  added -h. -help accepted but no more documented.
> jcmd         -? -h --help;  added -? --help. -help accepted but no more documented. Changed return value to '0'
> jdb          -? -h --help;  added -? -h --help. -help accepted but no more documented.
> jdeprscan    -? -h --help;  added -?
> jinfo        -? -h --help;  added -? --help. -help accepted but no more documented.
> jjs             -h --help;  Replaced -help by --help. Adding more not straight forward.
> jps          -? -h --help;  added -? --help. -help accepted but no more documented.
> jshell       -? -h --help;  added -?
> jstat        -? -h --help;  added -h --help. -help accepted but no more documented.
> 
> Best regards,
>    Goetz.
>