Refactor with fixes for msys-git.

crup-runner.sh

 #!/bin/bash
 
 update_toplevel () {
   # Don't "pull" if checkout is not on a named branch
   if test "$2" = "pull" && ( ! git symbolic-ref HEAD >/dev/null 2>/dev/null ); then
     first_args="$1 fetch"
   else
     first_args="$1 $2"
   fi
   shift 2
@@ skipping 86 matching lines @@
   fi
 
   # Don't "pull" if checkout is not on a named branch
   shift
   if test $# -ne 0; then
     update_toplevel "$@"
   fi
 
   set_target_os
 
-  "$GIT_EXE" ls-files -s | grep ^160000 | awk '{print $4}' |
+  git ls-files -s | grep ^160000 | awk '{print $4}' |
   while read submod; do
     process_submodule "$submod"
   done
   status=$?
 else
   submodule="${1#*/}"
   echo "[$solution] updating $submodule"
-  "$GIT_EXE" submodule update --recursive --quiet "$submodule" |
-  ( grep -v '^Skipping submodule' || true ) | sed "s|^|[$1] |g"
+  git submodule update --recursive --quiet "$submodule" |
+  ( grep -v '^Skipping submodule' || true ) | sed "s|^|[$1] |g" 2>/dev/null
   status=$?
   if [ "$status" -ne "0" ]; then
     echo "[$solution] FAILED to update $submodule"
   fi
 fi
 exit $status