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Fixed bug where IFS shell var would get set to empty string #427

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Fixed bug where IFS shell var would get set to empty string #427

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15 changes: 14 additions & 1 deletion cmake/templates/setup.sh.in
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Original file line number Diff line number Diff line change
Expand Up @@ -50,12 +50,25 @@ CATKIN_SHELL=$CATKIN_SHELL "$_SETUP_UTIL" $@ > $_SETUP_TMP
_RM=`which rm`
$_RM $_SETUP_TMP

# source all environment hooks
# Save value of IFS, including if it was unset.
# (the "+x" syntax helps differentiate unset from empty string)
if [ -z ${IFS+x} ]; then
_IFS_WAS_UNSET=1
fi
_IFS=$IFS

# source all environment hooks
IFS=":"
for _envfile in $_CATKIN_ENVIRONMENT_HOOKS; do
IFS=$_IFS
. "$_envfile"
done

# Restore value of IFS, including if it was unset
IFS=$_IFS
if [ $_IFS_WAS_UNSET ]; then
unset IFS
fi
unset _IFS_WAS_UNSET
unset _IFS
unset _CATKIN_ENVIRONMENT_HOOKS