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nvm_version_greater() { | |
command awk 'BEGIN { | |
if (ARGV[1] == "" || ARGV[2] == "") exit(1) | |
split(ARGV[1], a, /\./); | |
split(ARGV[2], b, /\./); | |
for (i=1; i<=3; i++) { | |
if (a[i] && a[i] !~ /^[0-9]+$/) exit(2); | |
if (b[i] && b[i] !~ /^[0-9]+$/) { exit(0); } | |
if (a[i] < b[i]) exit(3); | |
else if (a[i] > b[i]) exit(0); | |
} | |
exit(4) | |
}' "${1#v}" "${2#v}" | |
} | |
set -e | |
if nvm_version_greater 0.12.0 0.12.87; then echo y; else echo n; fi |
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Turns out it's a bug in bash 3.2, fixed in 4.4: bats-core/bats-core#72 (comment) and https://tiswww.case.edu/php/chet/bash/CHANGES