Re: [bug-libunistring] Fix quoting in exported.sh.in, allow multiple arguments.

[Bruno Haible]

Hi Ralf,

> Quote argument to eval, to avoid losing TABs from @GLOBAL_SYMBOL_PIPE@

Hmm. I used exactly the same kind of quoting as libtool. Namely, the
configure file contains the following code, expanded from libtool.m4:

    # Now try to grab the symbols.
    nlist=conftest.nm
    if { (eval echo "$as_me:$LINENO: \"$NM conftest.$ac_objext \| 
$lt_cv_sys_global_symbol_pipe \> $nlist\"") >&5
  (eval $NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $nlist) 2>&5
  ac_status=$?

If here the contents of lt_cv_sys_global_symbol_pipe is first subject to
word expansion and then to 'eval', it can't be wrong if exported.sh does
the same?

Regarding quoting, probably I need to avoid evaluating the argument
string, i.e. write

  nm_cmd="@NM@ \$1 | @GLOBAL_SYMBOL_PIPE@"

or

  nm_cmd="@NM@ \$* | @GLOBAL_SYMBOL_PIPE@"

> The multi-file change allows for further improvements to the build
> system.

What other changes do you have in mind? Or do you want to reuse exported.sh
in automake?

Bruno