Allow Mac users to double-click to launch Crawl:

- Use argv[0] to figure out where Crawl lives and where to find data files.
  The Mac Finder sets the working directory to / and the full path to the 
  executable is available in argv[0] when the user double-clicks.
- Converted some of the old char*s to std::string.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@1407 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 1 insertions, 1 deletions

diff --git a/crawl-ref/source/macro.cc b/crawl-ref/source/macro.cc
index 4eac355975..b665301499 100644
--- a/crawl-ref/source/macro.cc
+++ b/crawl-ref/source/macro.cc
@@ -171,7 +171,7 @@ static std::string get_macro_file()
 {
     std::string dir =
         !Options.macro_dir.empty()? Options.macro_dir :
-        SysEnv.crawl_dir?           SysEnv.crawl_dir : "";
+        !SysEnv.crawl_dir.empty()?  SysEnv.crawl_dir : "";
     
     if (!dir.empty())
     {