/usr/share/doc/rexical/examples/sample.rex is in rexical 1.0.5-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | #
# sample.rex
# lexical definition sample for rex
#
class Sample
macro
BLANK [\ \t]+
rule
BLANK # no action
\d+ { [:digit, text.to_i] }
\w+ { [:word, text] }
\n
. { [text, text] }
end
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