2009-01-27 Tatsuhiro Tsujikawa <t-tujikawa@users.sourceforge.net>

	Remove leading "--" from help keyword and a substring after "="
	from help keyword, so that one can query options by '-h--max-'
	or '-hmax-peers=10'.	
	* src/option_processing.cc

1 files changed, 11 insertions, 4 deletions

diff --git a/src/option_processing.cc b/src/option_processing.cc
index 0a810749..a5304a9a 100644
--- a/src/option_processing.cc
+++ b/src/option_processing.cc
@@ -578,13 +578,20 @@ Option* option_processing(int argc, char* const argv[])
       exit(DownloadResult::FINISHED);
     case 'h':
       {
-	std::string category;
+	std::string keyword;
 	if(optarg == 0 || strlen(optarg) == 0) {
-	  category = TAG_BASIC;
+	  keyword = TAG_BASIC;
 	} else {
-	  category = optarg;
+	  keyword = optarg;
+	  if(Util::startsWith(keyword, "--")) {
+	    keyword = keyword.substr(2);
+	  }
+	  std::string::size_type eqpos = keyword.find("=");
+	  if(eqpos != std::string::npos) {
+	    keyword = keyword.substr(0, eqpos);
+	  }
 	}
-	showUsage(category, oparser);
+	showUsage(keyword, oparser);
 	exit(DownloadResult::FINISHED);
       }
     default: