[bug #18561] Why backslash line continuation introduce an extra space

[Paul D. Smith]

Update of bug #18561 (project make):

                  Status:                    None => Not A Bug              
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #1:

It is by design; in fact it's mandated by the POSIX standard for make, which
states:

> When an escaped <newline> (one preceded by a backslash) is found
> anywhere in the makefile except in a command line, it shall be
> replaced, along with any leading white space on the following
> line, with a single <space>.

Since there is no limit to the length of a physical line in a makefile in GNU
make, I suggest you only break physical lines at whitespace.

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