sed: fix handling of escaped delimiters in s/// replacement

function                                             old     new   delta
parse_regex_delim                                    111     140     +29

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/testsuite/sed.tests b/testsuite/sed.tests
index 440996a21..626542e33 100755
--- a/testsuite/sed.tests
+++ b/testsuite/sed.tests
@@ -329,10 +329,15 @@ testing "sed special char as s/// delimiter, in pattern" \
         "sed 's+9\++X+'" \
         "X8=17\n" "" "9+8=17\n"
 
-# but in replacement string, "\&" remains "\&", not interpreted as "&"
-testing "sed special char as s/// delimiter, in replacement" \
+# Matching GNU sed 4.8:
+# in replacement string, "\&" remains "\&", not interpreted as "&"
+testing "sed special char as s/// delimiter, in replacement 1" \
         "sed 's&9&X\&&'" \
         "X&+8=17\n" "" "9+8=17\n"
+# in replacement string, "\1" is interpreted as "1"
+testing "sed special char as s/// delimiter, in replacement 2" \
+        "sed 's1\(9\)1X\11'" \
+        "X1+8=17\n" "" "9+8=17\n"
 
 testing "sed /\$_in_regex/ should not match newlines, only end-of-line" \
         "sed ': testcont; /\\\\$/{ =; N; b testcont }'" \