From 1f99ce4df1c58a8c06393a5875c823ae0dfcd99c Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 4 Apr 2019 18:10:26 +0300
Subject: Regenerate options parsing code

---
 odb/options.cxx | 80 +++++++++++++++++++++++++++++++++------------------------
 1 file changed, 46 insertions(+), 34 deletions(-)

diff --git a/odb/options.cxx b/odb/options.cxx
index f52289c..98af4e9 100644
--- a/odb/options.cxx
+++ b/odb/options.cxx
@@ -373,45 +373,59 @@ namespace cli
       if (line.empty () || line[0] == '#')
         continue;
 
-      string::size_type p (line.find (' '));
-
-      if (p == string::npos)
+      string::size_type p (string::npos);
+      if (line.compare (0, 1, "-") == 0)
       {
-        if (!skip_)
-          skip_ = (line == "--");
+        p = line.find (' ');
 
-        args_.push_back (line);
+        string::size_type q (line.find ('='));
+        if (q != string::npos && q < p)
+          p = q;
       }
-      else
+
+      string s1;
+      if (p != string::npos)
       {
-        string s1 (line, 0, p);
+        s1.assign (line, 0, p);
 
         // Skip leading whitespaces in the argument.
         //
-        n = line.size ();
-        for (++p; p < n; ++p)
+        if (line[p] == '=')
+          ++p;
+        else
         {
-          char c (line[p]);
-
-          if (c != ' ' && c != '\t' && c != '\r')
-            break;
+          n = line.size ();
+          for (++p; p < n; ++p)
+          {
+            char c (line[p]);
+            if (c != ' ' && c != '\t' && c != '\r')
+              break;
+          }
         }
+      }
+      else if (!skip_)
+        skip_ = (line == "--");
 
-        string s2 (line, p);
+      string s2 (line, p != string::npos ? p : 0);
 
-        // If the string is wrapped in quotes, remove them.
-        //
-        n = s2.size ();
-        char cf (s2[0]), cl (s2[n - 1]);
+      // If the string (which is an option value or argument) is
+      // wrapped in quotes, remove them.
+      //
+      n = s2.size ();
+      char cf (s2[0]), cl (s2[n - 1]);
 
-        if (cf == '"' || cf == '\'' || cl == '"' || cl == '\'')
-        {
-          if (n == 1 || cf != cl)
-            throw unmatched_quote (s2);
+      if (cf == '"' || cf == '\'' || cl == '"' || cl == '\'')
+      {
+        if (n == 1 || cf != cl)
+          throw unmatched_quote (s2);
 
-          s2 = string (s2, 1, n - 2);
-        }
+        s2 = string (s2, 1, n - 2);
+      }
 
+      if (!s1.empty ())
+      {
+        // See if this is another file option.
+        //
         const option_info* oi;
         if (!skip_ && (oi = find (s1.c_str ())))
         {
@@ -421,19 +435,19 @@ namespace cli
           if (oi->search_func != 0)
           {
             std::string f (oi->search_func (s2.c_str (), oi->arg));
-
             if (!f.empty ())
               load (f);
           }
           else
             load (s2);
+
+          continue;
         }
-        else
-        {
-          args_.push_back (s1);
-          args_.push_back (s2);
-        }
+
+        args_.push_back (s1);
       }
+
+      args_.push_back (s2);
     }
   }
 
@@ -2201,9 +2215,7 @@ print_usage (::std::ostream& os, ::cli::usage_para p)
      << "                              source lines of code (SLOC) does not exceed" << ::std::endl
      << "                              <num>." << ::std::endl;
 
-  os << "--options-file <file>         Read additional options from <file> with each" << ::std::endl
-     << "                              option appearing on a separate line optionally" << ::std::endl
-     << "                              followed by space and an option value." << ::std::endl;
+  os << "--options-file <file>         Read additional options from <file>." << ::std::endl;
 
   os << "-x <option>                   Pass <option> to the underlying C++ compiler" << ::std::endl
      << "                              (g++)." << ::std::endl;
-- 
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