fix: push hilbish.which return value properly

api.go

@@ -30,6 +30,7 @@ var exports = map[string]lua.LGFunction {
 	"read": hlread,
 	"run": hlrun,
 	"timeout": hltimeout,
+	"which": hlwhich,
 }
 
 var greeting string
@@ -331,3 +332,17 @@ func hlprependPath(L *lua.LState) int {
 
 	return 0
 }
+
+// which(binName)
+// Searches for an executable called `binName` in the directories of $PATH
+func hlwhich(L *lua.LState) int {
+	binName := L.CheckString(1)
+	path, err := exec.LookPath(binName)
+	if err != nil {
+		l.Push(lua.LNil)
+		return 1
+	}
+	
+	l.Push(lua.LString(path))
+	return 1
+}

docs/hilbish.txt

@@ -35,3 +35,5 @@ run(cmd) > Runs `cmd` in Hilbish's sh interpreter.
 
 timeout(cb, time) > Runs the `cb` function after `time` in milliseconds
 
+which(binName) > Searches for an executable called `binName` in the directories of $PATH
+

emmyLuaDocs/hilbish.lua

@@ -65,4 +65,7 @@ function hilbish.run(cmd) end
 --- @param time number
 function hilbish.timeout(cb, time) end
 
+--- Searches for an executable called `binName` in the directories of $PATH
+function hilbish.which() end
+
 return hilbish