Merge pull request #84 from tammela/fix-issue-83

fix: fix issue #83

Author: Koihik

src/FormatVisitor.cpp

@@ -1060,6 +1060,11 @@ antlrcpp::Any FormatVisitor::visitString(LuaParser::StringContext* ctx) {
         *newstr.begin() = quote;
         *newstr.rbegin() = quote;
 
+        // undo a transformation that invalidates strings in certain conditions
+        if (newstr.at(newstr.size() - 2) == '\\' &&
+              newstr.at(newstr.size() - 3) != '\\')
+           newstr.insert(newstr.size() - 2, "\\");
+
         cur_writer() << newstr;
         return nullptr;
     }

test/testdata/literals/_doublequote.lua

@@ -3,3 +3,5 @@ local foo = '\''
 local bar = 'don\'t'
 local bar = '"'
 local foobar = '\\\\"'
+local kek = '\\'
+local topkek = 'a\\'

test/testdata/literals/_singlequote.lua

@@ -3,3 +3,5 @@ local foo = "\""
 local bar = "don't"
 local foo = "'"
 local foobar = "\\\\'"
+local kek = "\\"
+local topkek = "a\\"

test/testdata/literals/doublequote.lua

@@ -3,3 +3,5 @@ local foo = "'"
 local bar = "don't"
 local bar = "\""
 local foobar = "\\\\\""
+local kek = "\\"
+local topkek = "a\\"

test/testdata/literals/singlequote.lua

@@ -3,3 +3,5 @@ local foo = '"'
 local bar = 'don\'t'
 local foo = '\''
 local foobar = '\\\\\''
+local kek = '\\'
+local topkek = 'a\\'