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Document that variables are not exported to backticks in the same scope (#856)

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Casey Rodarmor 2021-06-04 12:57:26 -04:00 committed by GitHub
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README.adoc
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@ -899,6 +899,20 @@ test $RUST_BACKTRACE="1":
cargo test
```
Exported variables and parameters are not exported to backticks in the same scope.
```make
export FOO := "world"
# This backtick will fail with "WORLD: unbound variable"
BAR := `echo hello $WORLD`
```
```make
# Running `just a foo` will fail with "A: unbound varaible"
a $A $B=`echo $A`:
echo $A $B
```
=== Recipe Parameters
Recipes may have parameters. Here recipe `build` has a parameter called `target`: