Re: Tricky problem filtering out commas from a string.

[Paul Smith]

On Thu, 2007-04-19 at 13:15 +0100, Dave Korn wrote:

> The obvious first approach - escape the comma so that filter-out doesn't
> think it's the separator between its two arguments - just doesn't work.  I
> can't quite see how to achieve this in make....

Using backslashes as an escape character in make is pretty ad hoc; it
definitely does not work everywhere you expect it to (unfortunately).

However, you should be able to do it with variables:

    COMMA = ,
    LIST_WITHOUT_COMMAS:=$(filter-out $(COMMA),$(LIST_WITH_COMMAS))

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