Merge branch 'maint'

* maint:
  tests: automatic re-execution works for non-POSIX shells too
  tests: use more POSIX shell features our test scripts

+ Extra non-trivial edits:

* t/ax/test-init.sh: Apply the diffs between past versions of
'defs' in maint and in master; i.e., remove handling of $required
entries 'texi2dvi-o' and 'makeinfo-html', and adjust to the fact
that the parallel testsuite harness is now the default.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/t/color2.sh b/t/color2.sh
index b073d5cb3..041ffe6e8 100755
--- a/t/color2.sh
+++ b/t/color2.sh
@@ -32,7 +32,7 @@ std="$esc\[m"
 # Check that grep can parse nonprinting characters.
 # BSD 'grep' works from a pipe, but not a seekable file.
 # GNU or BSD 'grep -a' works on files, but is not portable.
-case `echo "$std" | grep .` in
+case $(echo "$std" | grep .) in
   "$std") ;;
   *) skip_ "grep can't parse nonprinting characters";;
 esac