Merge pull request spack#53 from kgerheiser/bugfix/bash-escape-format…

…ting

Revert failed attempt to fix bash prompt when using colors

lib/spack/llnl/util/tty/color.py

@@ -153,7 +153,7 @@ def __init__(self, color=True):
     def escape(self, s):
         """Returns a TTY escape sequence for a color"""
         if self.color:
-            return "\[\033[%sm\]" % s
+            return "\033[%sm" % s
         else:
             return ''
 
@@ -207,12 +207,12 @@ def colorize(string, **kwargs):
 
 def clen(string):
     """Return the length of a string, excluding ansi color sequences."""
-    return len(re.sub(r'\[\033[^m]*m\]', '', string))
+    return len(re.sub(r'\033[^m]*m', '', string))
 
 
 def cextra(string):
     """Length of extra color characters in a string"""
-    return len(''.join(re.findall(r'\[\033[^m]*m\]', string)))
+    return len(''.join(re.findall(r'\033[^m]*m', string)))
 
 
 def cwrite(string, stream=None, color=None):