m4: how to output literal $0?

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How does one avoid m4 interpreting a $0, for example?

# foo.m4
define(m4_foo',$0')

# bar.txt
m4_foo

M4 does not replace the text. There must be some way to deposit $0 in a file via macros?

Asked by Chris (1075 rep)

Jul 12, 2020, 08:36 PM
Last activity: Jul 12, 2020, 09:47 PM