json-writer: fix wrong escaping of "\\/" as "\/"

Author: kdudka

json-writer.cc

@@ -105,8 +105,8 @@ void JsonWriter::flush() {
     str.push(reFilter);
 
     // create a regex-based filter to replace \/ (produced by newer boost) by /
-    const boost::regex reSlash("([^\\\\]*)\\\\/");
-    boost::iostreams::basic_regex_filter<char> reFilterSlash(reSlash, "\\1/");
+    const boost::regex reSlash("([^\\\\]*(?:\\\\\\\\)*)(?:\\\\(/))?");
+    boost::iostreams::basic_regex_filter<char> reFilterSlash(reSlash, "\\1\\2");
     str.push(reFilterSlash);
 
     str.push(d->str);

tests/CMakeLists.txt

@@ -23,9 +23,8 @@ set(testdir     "${csdiff_SOURCE_DIR}/tests")
 set(csjson      "${csgrep} --mode=json")
 set(diffcmd     "diff -up")
 
-# new versions of Boost tend to escape '/' in JSON strings, no idea why
+# unify the JSON output generated by different version of Boost
 set(jsfilter "sed")
-set(jsfilter "${jsfilter} -e 's|\\\\\\\\\\\\\\\\/|/|g'")
 set(jsfilter "${jsfilter} -e ':a;N;$!ba;s|:\\\\\\\\n *\\\\\\\\[|: [|g'")
 
 macro(add_test_wrap test_name cmd)