diff options
| author | Luke Shumaker <lukeshu@parabola.nu> | 2017-02-15 14:29:19 -0500 |
|---|---|---|
| committer | Luke Shumaker <lukeshu@parabola.nu> | 2017-02-19 14:21:29 -0500 |
| commit | a4dded46e753923d82e54225e8462d4637003a7c (patch) | |
| tree | 76ef377b1148398e6c353e856f9e3255bc0695ca | |
| parent | 6bc63129f6b36ce30fcd9fb866e30acb66594f50 (diff) | |
| download | devtools32-a4dded46e753923d82e54225e8462d4637003a7c.tar.xz | |
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.
| -rw-r--r-- | lib/common.sh | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/common.sh b/lib/common.sh index 4593b36..2fa72dc 100644 --- a/lib/common.sh +++ b/lib/common.sh @@ -3,6 +3,9 @@ # License: Unspecified +[[ -z ${_INCLUDE_COMMON_SH:-} ]] || return 0 +_INCLUDE_COMMON_SH=true + # Avoid any encoding problems export LANG=C |