Use only POSIX compliant sed features #145
Merged
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Apparently basic regular expressions (BRE) do not have the OR operator by default. This PR uses extended regular expressions (ERE) so that it should work with any compliant system
See https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html
Test by doing
make -C certora clean munged-simple record-simple
and check that there is no diff