diff --git a/shell/ash.c b/shell/ash.c
index 2cebfe2c0..e0828d4a7 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -11592,11 +11592,17 @@ checkend: {
 		if (c == *eofmark) {
 			if (pfgets(line, sizeof(line)) != NULL) {
 				char *p, *q;
+				int cc;
 
 				p = line;
-				for (q = eofmark + 1; *q && *p == *q; p++, q++)
-					continue;
-				if (*p == '\n' && *q == '\0') {
+				for (q = eofmark + 1;; p++, q++) {
+					cc = *p;
+					if (cc == '\n')
+						cc = 0;
+					if (!*q || cc != *q)
+						break;
+				}
+				if (cc == *q) {
 					c = PEOF;
 					nlnoprompt();
 				} else {
diff --git a/shell/ash_test/ash-heredoc/heredoc6.right b/shell/ash_test/ash-heredoc/heredoc6.right
new file mode 100644
index 000000000..5d0f077cd
--- /dev/null
+++ b/shell/ash_test/ash-heredoc/heredoc6.right
@@ -0,0 +1,2 @@
+test
+OK:0
diff --git a/shell/ash_test/ash-heredoc/heredoc6.tests b/shell/ash_test/ash-heredoc/heredoc6.tests
new file mode 100755
index 000000000..346f5949a
--- /dev/null
+++ b/shell/ash_test/ash-heredoc/heredoc6.tests
@@ -0,0 +1,4 @@
+eval 'cat <<- NOT
+test
+NOT'
+echo OK:$?
diff --git a/shell/ash_test/ash-heredoc/heredoc7.right b/shell/ash_test/ash-heredoc/heredoc7.right
new file mode 100644
index 000000000..5d9c6c6c0
--- /dev/null
+++ b/shell/ash_test/ash-heredoc/heredoc7.right
@@ -0,0 +1 @@
+_ASBOX
diff --git a/shell/ash_test/ash-heredoc/heredoc7.tests b/shell/ash_test/ash-heredoc/heredoc7.tests
new file mode 100755
index 000000000..abd5941d9
--- /dev/null
+++ b/shell/ash_test/ash-heredoc/heredoc7.tests
@@ -0,0 +1,3 @@
+cat << _ACEOF
+_ASBOX
+_ACEOF
diff --git a/shell/hush_test/hush-heredoc/heredoc6.right b/shell/hush_test/hush-heredoc/heredoc6.right
new file mode 100644
index 000000000..5d0f077cd
--- /dev/null
+++ b/shell/hush_test/hush-heredoc/heredoc6.right
@@ -0,0 +1,2 @@
+test
+OK:0
diff --git a/shell/hush_test/hush-heredoc/heredoc6.tests b/shell/hush_test/hush-heredoc/heredoc6.tests
new file mode 100755
index 000000000..346f5949a
--- /dev/null
+++ b/shell/hush_test/hush-heredoc/heredoc6.tests
@@ -0,0 +1,4 @@
+eval 'cat <<- NOT
+test
+NOT'
+echo OK:$?
diff --git a/shell/hush_test/hush-heredoc/heredoc7.right b/shell/hush_test/hush-heredoc/heredoc7.right
new file mode 100644
index 000000000..5d9c6c6c0
--- /dev/null
+++ b/shell/hush_test/hush-heredoc/heredoc7.right
@@ -0,0 +1 @@
+_ASBOX
diff --git a/shell/hush_test/hush-heredoc/heredoc7.tests b/shell/hush_test/hush-heredoc/heredoc7.tests
new file mode 100755
index 000000000..abd5941d9
--- /dev/null
+++ b/shell/hush_test/hush-heredoc/heredoc7.tests
@@ -0,0 +1,3 @@
+cat << _ACEOF
+_ASBOX
+_ACEOF