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authorLuke Shumaker <lukeshu@parabola.nu>2017-02-15 14:29:19 -0500
committerLuke Shumaker <lukeshu@parabola.nu>2017-02-15 14:29:19 -0500
commitf1ed4b1d81dcaa04bfdf49e36f3b5e3cc5dfa338 (patch)
tree3a8d1377c3da73c7842e7ea2e1e484adb892c253 /archrm.in
parentaa11acaf52dfd101cb6fe6f7137d2cbd5c8e0d9b (diff)
lib/common.sh: Make it safe to include multiple times.
This is similar to common C #ifdef guards. I was tempted to wrap the entire thing in the if/fi (rather than use 'return' to bail early. However, that means it won't execute anything until after it reaches 'fi'. And if `shopt -s extglob` isn't executed before parsing, then it will syntax-error on the extended globs. One solution would have been to move `shopt -s extglob` up above the include-guard. But the committed solution is all-around simpler.
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