# - for bash >= 2.0: define echo to a function that uses the printf built-in.
# - for bash < 2.0: define echo to a function that uses cat of a here document.
# - for zsh: turn sh-emulation on.
+# - for ksh: alias echo to 'print -r'.
# - for ksh: alias echo to a function that uses cat of a here document.
-# - for Solaris /bin/sh: respawn using /bin/ksh and rely on the ksh workaround.
+# - for Solaris /bin/sh and OSF/1 /bin/sh: respawn using /bin/ksh and rely on
+# the ksh workaround.
# - otherwise: respawn using /bin/sh and rely on the workarounds.
# When respawning, we pass --no-reexec as first argument, so as to avoid
# turning this script into a fork bomb in unlucky situations.
&& (emulate sh) >/dev/null 2>&1; then
emulate sh
fi
+# For ksh: alias echo to 'print -r'.
+if test -z "$have_echo" \
+ && (type print) >/dev/null 2>&1; then
+ # A 'print' command exists.
+ if type print 2>/dev/null | grep / > /dev/null; then
+ :
+ else
+ # 'print' is a shell built-in.
+ if (print -r '\told' | grep told > /dev/null) 2>/dev/null; then
+ # 'print' is the ksh shell built-in.
+ alias echo='print -r'
+ fi
+ fi
+fi
+if test -z "$have_echo" \
+ && echo '\t' | grep t > /dev/null; then
+ have_echo=yes
+fi
# For ksh: alias echo to a function that uses cat of a here document.
# The ksh manual page says:
# "Aliasing is performed when scripts are read, not while they are executed.