gawk: regression with unary plus
Previously conversions could be triggered by either adding zero (+0), unary
plus (+) or unary minus (-) [1]:
$ gawk --version
GNU Awk 4.1.4, API: 1.1 (GNU MPFR 3.1.6-p1, GNU MP 6.1.2)
$ ./gawk 'BEGIN {print "01" + 0}'
1
$ ./gawk 'BEGIN {print +"01"}'
1
$ ./gawk 'BEGIN {print -"01"}'
-1
However now conversion only happens with adding zero and unary minus:
$ gawk --version
GNU Awk 4.2.0, API: 2.0 (GNU MPFR 3.1.6-p1, GNU MP 6.1.2)
$ gawk 'BEGIN {print "01" + 0}'
1
$ gawk 'BEGIN {print +"01"}'
01
$ gawk 'BEGIN {print -"01"}'
-1
Does anyone know where this change was mentioned or why it was done?
[1] http://pubs.opengroup.org/onlinepubs/9699919799/utilities/awk.html
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