X-Git-Url: http://www.git.cypherpunks.ru/?p=goredo.git;a=blobdiff_plain;f=dot.go;h=8f5673108de3450848bdfad3370ed26958a1488b;hp=d59bc408a02d3c772a500bce5a98f3ecce44c9ce;hb=b4eefdd675c9aef9ff8bd1089d031ee05733195b;hpb=67e92d5a298516292bbbee1f7714708cdc0766f8

diff --git a/dot.go b/dot.go
index d59bc40..8f56731 100644
--- a/dot.go
+++ b/dot.go
@@ -1,6 +1,6 @@
 /*
-goredo -- redo implementation on pure Go
-Copyright (C) 2020 Sergey Matveev <stargrave@stargrave.org>
+goredo -- djb's redo implementation on pure Go
+Copyright (C) 2020-2023 Sergey Matveev <stargrave@stargrave.org>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -20,6 +20,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 package main
 
 import (
+	"errors"
 	"fmt"
 	"io"
 	"os"
@@ -46,7 +47,7 @@ func dotWalker(data map[DotNodes]bool, tgtOrig string) (map[DotNodes]bool, error
 	for {
 		m, err := r.NextMap()
 		if err != nil {
-			if err == io.EOF {
+			if errors.Is(err, io.EOF) {
 				break
 			}
 			return nil, err
@@ -56,8 +57,11 @@ func dotWalker(data map[DotNodes]bool, tgtOrig string) (map[DotNodes]bool, error
 			data[DotNodes{tgtOrig, cwdMustRel(cwd, m["Target"])}] = true
 		case DepTypeIfchange:
 			dep = m["Target"]
+			if dep == tgt {
+				continue
+			}
 			data[DotNodes{tgtOrig, cwdMustRel(cwd, dep)}] = false
-			if isSrc(cwd, dep) || dep == tgt {
+			if isSrc(cwd, dep) {
 				continue
 			}
 			data, err = dotWalker(data, cwdMustRel(cwd, dep))