question on AC_DEFINE_UNQUOTED

[vvv]

Hi,

with autoconf 2.13, i was able to do the following:

AC_ARG_ENABLE(feature, [  --enable-feature='STRING'],
  AC_DEFINE_UNQUOTED(FEATURE,"$enableval"))

and then call configure --enable-feature='Some string\\nWith newlines'

which resulted in a line

#define UNIX_PROMPT "Some string\nWith newlines"

in config.h; but with recent cvs version of autoconf, the above does
not work: i get

#define UNIX_PROMPT "Some string
With newlines"

in config.h which causes compilation errors. :-( how can this be
fixed?

Best,
v.