Handle sed options after operands

src/Options.cpp

@@ -44,11 +44,27 @@ void OptionParser::printHelp(bool includeEmail, bool toStdout) {
 
 ParseResult OptionParser::parse(int argc, char **argv) const {
   ParseResult result;
-  bool scriptConsumed = false;
+  std::vector<std::string> operands;
+  bool endOfOptions = false;
 
   for (int i = 1; i < argc; ++i) {
     std::string arg = argv[i] == nullptr ? "" : argv[i];
 
+    if (endOfOptions) {
+      operands.push_back(arg);
+      continue;
+    }
+
+    if (arg == "--") {
+      endOfOptions = true;
+      continue;
+    }
+
+    if (arg == "-") {
+      operands.push_back(arg);
+      continue;
+    }
+
     // --help and --version are terminal actions: no scripts or files are read.
     if (arg == "--help") {
       printHelp(true, true);
@@ -63,7 +79,7 @@ ParseResult OptionParser::parse(int argc, char **argv) const {
       return result;
     }
 
-    if (!scriptConsumed && !arg.empty() && arg[0] == '-') {
+    if (!arg.empty() && arg[0] == '-') {
       // Long options either toggle state or add a script source while preserving
       // the original source order in scriptSpecs.
       if (arg == "--quiet" || arg == "--silent") {
@@ -190,15 +206,21 @@ ParseResult OptionParser::parse(int argc, char **argv) const {
       continue;
     }
 
-    if (result.options.scripts.empty() && result.options.scriptFiles.empty() &&
-        !scriptConsumed) {
-      // With no -e/-f, the first non-option argument is the script; the rest are
-      // input files.
-      result.options.scripts.push_back(arg);
-      result.options.scriptSpecs.push_back({false, arg});
-      scriptConsumed = true;
-    } else {
-      result.options.inputFiles.push_back(arg);
+    operands.push_back(arg);
+  }
+
+  if (result.options.scripts.empty() && result.options.scriptFiles.empty() &&
+      !operands.empty()) {
+    // GNU-style option permutation means later -e/-f options still prevent the
+    // first operand from becoming an implicit script.  Decide only after every
+    // argv entry has been scanned.
+    result.options.scripts.push_back(operands.front());
+    result.options.scriptSpecs.push_back({false, operands.front()});
+    result.options.inputFiles.insert(result.options.inputFiles.end(),
+                                     operands.begin() + 1, operands.end());
+  } else {
+    for (const std::string &operand : operands) {
+      result.options.inputFiles.push_back(operand);
     }
   }