You are viewing the version of this documentation from Perl blead. This is the main development branch of Perl. (git commit 456af7a6d8f038e25d721dadc2ba4fb26d170304)
HANDLE->format_name(EXPR)
$FORMAT_NAME
$~

The name of the current report format for the currently selected output channel. The default format name is the same as the filehandle name. For example, the default format name for the STDOUT filehandle is just STDOUT.

Mnemonic: brother to $^.