Fix M4 quotation (square brackets in strings)

diff --git a/yaz.m4 b/yaz.m4
index 3946a72..5b39828 100644 (file)
--- a/yaz.m4
+++ b/yaz.m4
@@ -5,7 +5,7 @@ dnl ----- Setup Docbook documentation for YAZ
 AC_DEFUN([YAZ_DOC],
 [
 AC_SUBST(DTD_DIR)      
-AC_ARG_WITH(docbook-dtd, [  --with-docbook-dtd[=DIR]  use docbookx.dtd in DIR],
+AC_ARG_WITH(docbook-dtd,[[  --with-docbook-dtd=DIR  use docbookx.dtd in DIR]],
 [
        if test -f "$withval/docbookx.dtd"; then
                DTD_DIR=$withval
@@ -30,7 +30,7 @@ AC_ARG_WITH(docbook-dtd, [  --with-docbook-dtd[=DIR]  use docbookx.dtd in DIR],
        fi
 ])
 AC_SUBST(DSSSL_DIR)
-AC_ARG_WITH(docbook-dsssl,[  --with-docbook-dsssl[=DIR] use Docbook DSSSL in DIR/{html,print}/docbook.dsl],
+AC_ARG_WITH(docbook-dsssl,[[  --with-docbook-dsssl=DIR use Docbook DSSSL in DIR/{html,print}/docbook.dsl]],
 [
        if test -f "$withval/html/docbook.dsl"; then
                DSSSL_DIR=$withval
@@ -53,7 +53,7 @@ AC_ARG_WITH(docbook-dsssl,[  --with-docbook-dsssl[=DIR] use Docbook DSSSL in DIR
        fi
 ])
 AC_SUBST(XSL_DIR)
-AC_ARG_WITH(docbook-xsl,[  --with-docbook-xsl[=DIR]  use Docbook XSL in DIR/{htmlhelp,xhtml}],
+AC_ARG_WITH(docbook-xsl,[[  --with-docbook-xsl=DIR  use Docbook XSL in DIR/{htmlhelp,xhtml}]],
 [
        if test -f "$withval/htmlhelp/htmlhelp.xsl"; then
                XSL_DIR=$withval