FormatSpec.writeUpToNextSpec

bool writeUpToNextSpec(OutputRange)(ref OutputRange writer) scope

Writes the format string to an output range until the next format specifier is found and parse that format specifier.

See the description of format strings for more details about the format specifier.

`writer`	an output range, where the format string is written to
`OutputRange`	type of the output range

True, if a format specifier is found and false, if the end of the

format string has been reached.

when parsing the format specifier did not succeed.