[PATCH] fix a bug where hg could remove files ending in .tmp

# HG changeset patch
# User Benoit Boissinot <benoit.boissinot@xxxxxxxxxxxx>
# Node ID 68e797ee9332f4687e4c98849e29429882a22c57
# Parent  df7fb20c4bacd0ff942ab45dea7cd9b8235dd796
fix a bug where hg could remove file ending with .tmp                           
                                               
                                                                                
                                               
util.opener used a fixed filename for writing tempfile                          
                                               
instead of using the tempfile module.

diff -r df7fb20c4bac -r 68e797ee9332 mercurial/util.py
--- a/mercurial/util.py Fri Oct 28 19:47:31 2005 +0200
+++ b/mercurial/util.py Fri Oct 28 20:31:56 2005 +0200
@@ -377,8 +377,17 @@
                     os.makedirs(d)
             else:
                 if nlink > 1:
-                    file(f + ".tmp", "wb").write(file(f, "rb").read())
-                    rename(f+".tmp", f)
+                    d, fn = os.path.split(f)
+                    fd, temp = tempfile.mkstemp(prefix=fn, dir=d)
+                    fp = os.fdopen(fd, "wb")
+                    try:
+                        fp.write(file(f, "rb").read())
+                    except:
+                        try: os.unlink(temp)
+                        except: pass
+                        raise
+                    fp.close()
+                    rename(temp, f)
 
         return file(f, mode)