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-rw-r--r--lib/spack/spack/util/executable.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/spack/spack/util/executable.py b/lib/spack/spack/util/executable.py
index fc27b789d0..25819b6fc7 100644
--- a/lib/spack/spack/util/executable.py
+++ b/lib/spack/spack/util/executable.py
@@ -144,7 +144,7 @@ class Executable(object):
cmd = self.exe + list(args)
- cmd_line = ' '.join(cmd)
+ cmd_line = "'%s'" % "' '".join(map(lambda arg: arg.replace("'", "'\"'\"'"), cmd))
tty.debug(cmd_line)
try: