Jason Gunthorpe writes ("Strange Dependancies"):
...
> I have just added support in APT for constructs like:
...
> Depends: libc6, sp (>= 1.1.1-3), sgml-data (>= 0.02),
> sgml-base, gawk, perl (>= 5.004.04-4)
...
> (note the multiple lines used for the depends)
...
> I got a bug report effectively saying that dpkg permits this. Till then I
> had thought it was invalid. only xzip and sgml-tools make use of this.
Packaging manual, s4.1 (Syntax of control files):
Some fields' values may span several lines; in this case each
continuation line must start with a space or tab. Any trailing spaces
or tabs at the end of individual lines of a field value are ignored.
Except where otherwise stated only a single line of data is allowed
and whitespace is not significant in a field body. Whitespace may
never appear inside names (of packages, architectures, files or
anything else), version numbers or in between the characters of
multi-character version relationships.
It isn't otherwise stated, except that in s8.1 (Syntax of relationship
fields):
Whitespace may appear at any point in the version specification, and
must appear where it's necessary to disambiguate; it is not otherwise
significant.
Note that it says `whitespace', not `horizontal whitespace.' A strict
interpretation of this is that you can break lines, but only inside
the parentheses, so the example above is illegal but this is legal:
Depends: libc6, sp (>= 1.1.1-3), sgml-data (>= 0.02
), sgml-base, gawk, perl (>= 5.004.04-4)
This is clearly silly. I think we should state that dependency
relationship fields may span lines.
Ian.
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