[Issue 20064] New: format separator fails with leading zeros

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20064

          Issue ID: 20064
           Summary: format separator fails with leading zeros
           Product: D
           Version: D2
          Hardware: All
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: svnpenn at gmail.com

format separator fails with leading zeros

Using this file:

    import std.format, std.stdio;
    void main() {
       auto aa = "%09,d".format(1234);
       writeln(aa);
    }

Produces:

    00001,234

Compare against JavaScript:

    (1234).toLocaleString(0, {minimumIntegerDigits: 7});
    "0,001,234"

Python:

    >>> format(1234, '08,')
    '0,001,234'

Go:

    package main
    import "golang.org/x/text/language"
    import "golang.org/x/text/message"
    func main() {
       message.NewPrinter(language.English).Printf("%07d\n", 1234)
       // 0,001,234
    }

https://dlang.org/library/std/format/format

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