Move debug builtins to separate file.

eval/builtin_fn.go

@@ -8,7 +8,6 @@ import (
 	"math/rand"
 	"net"
 	"path/filepath"
-	"runtime"
 	"time"
 	"unsafe"
 
@@ -75,12 +74,6 @@ func init() {
 		{"esleep", sleep},
 		{"-time", _time},
 
-		// Debugging
-		{"src", src},
-		{"-gc", _gc},
-		{"-stack", _stack},
-		{"-log", _log},
-
 		{"-ifaddrs", _ifaddrs},
 	})
 	// For rand and randint.
@@ -157,42 +150,6 @@ func _time(ec *Frame, args []interface{}, opts map[string]interface{}) {
 	fmt.Fprintln(ec.ports[1].File, dt)
 }
 
-func src(ec *Frame, args []interface{}, opts map[string]interface{}) {
-	TakeNoArg(args)
-	TakeNoOpt(opts)
-
-	ec.OutputChan() <- ec.srcMeta
-}
-
-func _gc(ec *Frame, args []interface{}, opts map[string]interface{}) {
-	TakeNoArg(args)
-	TakeNoOpt(opts)
-
-	runtime.GC()
-}
-
-func _stack(ec *Frame, args []interface{}, opts map[string]interface{}) {
-	TakeNoArg(args)
-	TakeNoOpt(opts)
-
-	out := ec.ports[1].File
-	// XXX dup with main.go
-	buf := make([]byte, 1024)
-	for runtime.Stack(buf, true) == cap(buf) {
-		buf = make([]byte, cap(buf)*2)
-	}
-	out.Write(buf)
-}
-
-func _log(ec *Frame, args []interface{}, opts map[string]interface{}) {
-	var fnamev string
-	ScanArgs(args, &fnamev)
-	fname := fnamev
-	TakeNoOpt(opts)
-
-	maybeThrow(util.SetOutputFile(fname))
-}
-
 func _ifaddrs(ec *Frame, args []interface{}, opts map[string]interface{}) {
 	TakeNoArg(args)
 	TakeNoOpt(opts)

eval/builtin_fn_debug.go

@@ -0,0 +1,53 @@
+package eval
+
+import (
+	"runtime"
+
+	"github.com/elves/elvish/util"
+)
+
+func init() {
+	addToBuiltinFns([]*BuiltinFn{
+		// Debugging
+		{"src", src},
+		{"-gc", _gc},
+		{"-stack", _stack},
+		{"-log", _log},
+	})
+}
+
+func src(ec *Frame, args []interface{}, opts map[string]interface{}) {
+	TakeNoArg(args)
+	TakeNoOpt(opts)
+
+	ec.OutputChan() <- ec.srcMeta
+}
+
+func _gc(ec *Frame, args []interface{}, opts map[string]interface{}) {
+	TakeNoArg(args)
+	TakeNoOpt(opts)
+
+	runtime.GC()
+}
+
+func _stack(ec *Frame, args []interface{}, opts map[string]interface{}) {
+	TakeNoArg(args)
+	TakeNoOpt(opts)
+
+	out := ec.ports[1].File
+	// XXX dup with main.go
+	buf := make([]byte, 1024)
+	for runtime.Stack(buf, true) == cap(buf) {
+		buf = make([]byte, cap(buf)*2)
+	}
+	out.Write(buf)
+}
+
+func _log(ec *Frame, args []interface{}, opts map[string]interface{}) {
+	var fnamev string
+	ScanArgs(args, &fnamev)
+	fname := fnamev
+	TakeNoOpt(opts)
+
+	maybeThrow(util.SetOutputFile(fname))
+}