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-rw-r--r--src/parse/ast.rs4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/parse/ast.rs b/src/parse/ast.rs
index 88ae734..bac40c8 100644
--- a/src/parse/ast.rs
+++ b/src/parse/ast.rs
@@ -330,7 +330,9 @@ impl WordPart {
fn eval(self, env: &Env) -> String {
match self {
Self::Alternation(_) => unreachable!(),
- Self::Var(name) => env.var(&name),
+ Self::Var(name) => {
+ env.var(&name).unwrap_or_else(|| "".to_string())
+ }
Self::Bareword(s)
| Self::DoubleQuoted(s)
| Self::SingleQuoted(s) => s,