On Sat, Mar 15, 2025, at 7:08 PM, MacBeth wrote:
> On Sat, Mar 15, 2025 at 12:33 PM Greg Wooledge <[email protected]> wrote:
>> On Sat, Mar 15, 2025 at 16:14:00 +0000, Nikola Novak via Bug reports for the
>> GNU Bourne Again SHell wrote:
>> > How do you end the heredoc with a multiline delimiter such as the
>> > following:
>> >
>> > cat << "a
>> > b"
>>
>> You don't.
>>
>
> However you could fake it, by including backslashes in the delimiter,
> which would allow literal newlines, but bash would ignore them as they
> are escape sequences. So they wouldn't actually be a part of the
> delimiter from bash's perspective, but merely visually and accepted
> from the literal input.
>
> $ cat <<EOT\
> $ EOF
> $ hello
> $ goodbye
> $ EOT\
> $ EOF
> hello
> goodbye
> $
This doesn't work when quoting part of the delimiter -- a common
thing to do. In this case, one has to use the "true" delimiter,
which defeats the purpose.
$ cat <<\EOT\
$$ EOF
$$ hello
$$ goodbye
$$ EOT\
$$ EOF
$$ \EOT\
$$ EOF
$$ oh no
$$ EOTEOF
hello
goodbye
EOT\
EOF
\EOT\
EOF
oh no
$
--
vq
