[Issue 18019] New: getopt worng behaviour (ConvException instead of GetOptException)

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18019

          Issue ID: 18019
           Summary: getopt worng behaviour (ConvException instead of
                    GetOptException)
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: minor
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: dmitry at indiedev.ru

Code:

import std.stdio, std.getopt;

void main(string[] args)
{
    bool replace;

    auto helpInformation = getopt(args,
        "replace|r", "Overwrite original file", &replace);

    if (helpInformation.helpWanted)
    {
        defaultGetoptPrinter("test", helpInformation.options);
        return;
    }
}

As I understand, now getopt should recognize "-r", "--replace", "-h" and
"--help" options.

And they works fine:

$ app.exe -h
test
-r --replace Overwrite original file
-h    --help This help information.


$ app.exe -r


$ app.exe --help
test
-r --replace Overwrite original file
-h    --help This help information.


$ app.exe --replace


But if enter "-help" or "-replace", there is a problem.

$ app.exe -help                                                                 
std.getopt.GetOptException at C:\D\dmd2\windows\bin\..\..\src\phobos\std\getopt.d(789):
Unrecognized option -help


$ app.exe -replace                                                              
std.conv.ConvException at C:\D\dmd2\windows\bin\..\..\src\phobos\std\conv.d(2018):
Can't parse string: bool should be case-insensitive 'true' or 'false'
----------------
0x00404620
0x00404814
0x004044E5
0x00402873
0x004022D7
0x0040221A
0x004094CF
0x00409493
0x00409394
0x00406CAF
0x765B336A in BaseThreadInitThunk
0x77DB98F2 in RtlInitializeExceptionChain
0x77DB98C5 in RtlInitializeExceptionChain

1) Why "-help" and "-replace" was recognized as options? They contains more
than one letter and bundling is disabled (as default).
2) At least, the behaviour should be same - "-replace" should throw
GetOptException.

If I don't understand something obvious, correct me, please.

--