Fix for PR32137: Allow use of spaces in Bugpoint ‘--compile-command’ argument

[gbreynoo]

Summary

MatzeB brought to my attention the bug PR32137, caused by my change in D29940. This patch fixes the issue.

[gbreynoo]

Apologies for the confusion, after looking again at PR32137 I will be abandoning this change.

ToolRunner.cpp

static void lexCommand(std::string &Message, const std::string &CommandLine,
                        std::string &CmdPath, std::vector<std::string> &Args) {
 
   std::string Token;
   std::string Command;
   bool FoundPath = false;
 
   // first argument is the PATH.
   // Skip repeated whitespace, leading whitespace and trailing whitespace.
-  for (std::size_t Pos = 0u; Pos <= CommandLine.size(); ++Pos) {
-    if ('\\' == CommandLine[Pos]) {
-      if (Pos + 1 < CommandLine.size())
-        Token.push_back(CommandLine[++Pos]);
-
-      continue;
-    }
-    if (' ' == CommandLine[Pos] || CommandLine.size() == Pos) {
-      if (Token.empty())
+  for (std::size_t Pos = 0u; Pos <= CommandLine.size (); ++Pos) {
+      if (CommandLine.size () == Pos || ' ' == CommandLine [Pos])
+      {
+          if (Token.empty ())
               continue;
 
           if (!FoundPath) {
               Command = Token;
-        FoundPath = true;
-        Token.clear();
+              Token.clear ();
+              FoundPath = true;
               continue;
           }
 
-      Args.push_back(Token);
-      Token.clear();
+          Args.push_back (Token);
+          Token.clear ();
           continue;
       }
-    Token.push_back(CommandLine[Pos]);
+      else if ('\\' == CommandLine [Pos]) {
+          if (Pos + 1 < CommandLine.size ())
+              Token.push_back (CommandLine [++Pos]);
+          continue;
+      }
+      Token.push_back (CommandLine [Pos]);
   }
 
   auto Path = sys::findProgramByName(Command);
   if (!Path) {
     Message = std::string("Cannot find '") + Command +
               "' in PATH: " + Path.getError().message() + "\n";
     return;
   }