[GRASS-user] How to quote temporal algebra expressions when using the inverse selection operator ! ?

nik at nikosalexandris.net nik at nikosalexandris.net
Thu Apr 15 01:23:43 PDT 2021

In one of the t.rast.algebra related tests, the use of the ! operator is 
demonstrated [0]:

t.rast.algebra", expression="R = A {!:,during} C", basename="r"


I can't seem however to use it properly (in the command line, Linux, 
bash ver. 5.0.7).

t.select -d expression="C = a1 : a2"
works, while this
t.select -d expression="C = a1 !: a2"
fails with
bash:  : unrecognized history modifier

How should such an expression be quoted?

Thanks, Nikos

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