feat: log name of overloaded variables

internal/whisper/exec.go

@@ -3,8 +3,10 @@ package whisper
 import (
 	"errors"
 	"io"
+	"log"
 	"os"
 	"os/exec"
+	"sort"
 
 	"github.com/busser/whisper/internal/environ"
 )
@@ -23,6 +25,18 @@ func Exec(name string, args ...string) (exitCode int, err error) {
 		return 0, err
 	}
 
+	var overloaded []string
+	for name, original := range originalVars {
+		if newVars[name] != original {
+			overloaded = append(overloaded, name)
+		}
+	}
+
+	sort.Strings(overloaded)
+	for _, name := range overloaded {
+		log.Printf("[whisper] overloading %s", name)
+	}
+
 	subCmd := exec.Command(name, args...)
 	subCmd.Env = environ.ToSlice(newVars)
 	subCmd.Stdin = os.Stdin