improve gerror for stack information; fix issue in gconv.String for nil *time.Time type

errors/gerror/gerror_error.go

@@ -9,6 +9,7 @@ package gerror
 import (
 	"bytes"
 	"fmt"
+	"github.com/gogf/gf/internal/intlog"
 	"io"
 	"runtime"
 	"strings"
@@ -22,7 +23,7 @@ type Error struct {
 }
 
 const (
-	gFILTER_KEY = "github.com/gogf/gf/"
+	gFILTER_KEY = "/errors/gerror/gerror"
 )
 
 var (
@@ -130,6 +131,19 @@ func formatSubStack(st stack, buffer *bytes.Buffer) {
 			if strings.Contains(file, gFILTER_KEY) {
 				continue
 			}
+			if !intlog.IsInGFDevelop() {
+				// Avoid GF stacks if not in GF development.
+				if strings.Contains(file, "github.com/gogf/gf/") {
+					continue
+				}
+				if strings.Contains(file, "github.com/gogf/gf@") {
+					continue
+				}
+			}
+			// Avoid stack string like "<autogenerated>"
+			if strings.Contains(file, "<") {
+				continue
+			}
 			if goRootForFilter != "" && len(file) >= len(goRootForFilter) && file[0:len(goRootForFilter)] == goRootForFilter {
 				continue
 			}