[bug #42125] Explicit rules do not support multiple targets

[Dietmar Schindler]

Follow-up Comment #7, bug #42125 (project make):

Regarding comment #5: Thanks for contemplating my suggestion! Indeed I paid
insufficient attention to the implications of allowing some other pattern rule
to be chosen, and I see that this is undesirable and that the static pattern
rule shall be statically chosen for the specified targets.
What I consider unfortunate is that the construct in the original submission
does not work - because (and that's _why_ I'd like _static pattern rules to be
considered pattern rules_, in a sense) I'd need exactly the targeted selection
of the recipe (making sure that no other rule is chosen) combined with this
characteristic of _pattern rules_ from section 10.5.1: _If a pattern rule has
multiple targets, "make" knows that the rule’s recipe is responsible for
making all of the targets. The recipe is executed only once to make all the
targets._

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