Re: Backslash handling not POSIX-compliant

[Ivan Kozlov]

My test case is actually wrong. The standard output would be the same in both 
cases.

Here is a proper test case:
>.POSIX:
>test: 
> A=\\
> echo $$A

The expected result is
>\
being written to the standard output. The actual result is an empty line being 
written.

Another example is:
>.POSIX:
>test:
> echo "a \\
> b"
Which fails instead of printing
>a \
>b

The expected behaviour is useful because it allows portably quoting macros with 
here-documents, for example:
> sed '$s:\\$::' <<\end; : \\
> $V\
> end
should print the literal value of the macro $V that can contain single quotes 
and special characters. I believe there is no other way to achieve this with 
POSIX make.