interp: set EUID

Set EUID variable analog to UID. Signed-off-by: Jonathon Anderson <janderson@ciq.co>
mvdan · Dec 16, 2022 · bfe6aab · bfe6aab
1 parent 5800023
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## [3.6.1] - 2023-??-??
+
+- **interp**
+  - Set `EUID` just like `UID`
+
 ## [3.6.0] - 2022-12-11
 
 This release drops support for Go 1.17 and includes many features and fixes.

diff --git a/interp/api.go b/interp/api.go
@@ -613,6 +613,13 @@ func (r *Runner) Reset() {
 			Str:      strconv.Itoa(os.Getuid()),
 		})
 	}
+	if !r.writeEnv.Get("EUID").IsSet() {
+		r.setVar("EUID", nil, expand.Variable{
+			Kind:     expand.String,
+			ReadOnly: true,
+			Str:      strconv.Itoa(os.Getuid()),
+		})
+	}
 	if !r.writeEnv.Get("GID").IsSet() {
 		r.setVar("GID", nil, expand.Variable{
 			Kind:     expand.String,