# HG changeset patch # User Jim Meyering # Date 947660214 0 # Node ID a63c1d7ce4a76a193a462117cb707cda1b6feb8d # Parent 9b5fc18f4655671bab2fce8b1cfd16662e134a23 *** empty log message *** diff --git a/m4/ChangeLog b/m4/ChangeLog --- a/m4/ChangeLog +++ b/m4/ChangeLog @@ -1,3 +1,14 @@ +2000-01-11 Paul Eggert + + Quote multibyte characters correctly. + * m4/c-bs-a.m4: New file. + * m4/prereq.m4 (jm_PREREQ_QUOTEARG): New macro. + (jm_PREREQ): Use it. + +2000-01-11 Paul Eggert + + * m4/uintmax_t.m4: Port to autoconf 2.13. + 2000-01-08 Jim Meyering * strerror_r.m4 (jm_FUNC_STRERROR_R): New file/macro. diff --git a/m4/c-bs-a.m4 b/m4/c-bs-a.m4 new file mode 100644 --- /dev/null +++ b/m4/c-bs-a.m4 @@ -0,0 +1,25 @@ +#serial 1 + +dnl From Paul Eggert. + +AC_DEFUN(AC_C_BACKSLASH_A, +[ + AC_CACHE_CHECK([whether backslash-a works in strings], ac_cv_c_backslash_a, + [AC_TRY_COMPILE([], + [ + changequote(, ) dnl +#if '\a' == 'a' + syntax error; +#endif + char buf['\a' == 'a' ? -1 : 1]; + buf[0] = '\a'; + return buf[0] != "\a"[0]; + changequote([, ])dnl + ], + ac_cv_c_backslash_a=yes, + ac_cv_c_backslash_a=no)]) + if test $ac_cv_c_backslash_a = yes; then + AC_DEFINE(HAVE_C_BACKSLASH_A, 1, + [Define if backslash-a works in C strings.]) + fi +])