--- cfg.pod 2002/07/03 13:25:34 1.1
+++ cfg.pod 2002/07/06 12:23:43 1.2
@@ -64,6 +64,7 @@
B<string> ::= B<DQ_STRING> # double quoted string
| B<SQ_STRING> # single quoted string
+ | B<FQ_STRING> # flexible quoted string
| B<PT_STRING> # plain text string
The other contained terminal symbols are defined itself by the following
@@ -82,9 +83,10 @@
| B<DQ_CHAR> B<DQ_CHARS>
B<DQ_CHAR> ::= /\\"/ # escaped quote
- | /\\x[0-9a-zA-Z]{2}/ # hexadecimal char
+ | /\\x\{[0-9a-fA-F]+\}/ # hex-char group
+ | /\\x[0-9a-fA-F]{2}/ # hex-char
| /\\[0-7]{1,3}/ # octal character
- | /\\[trn]/ # TAB, CR, NL
+ | /\\[nrtbfae]/ # NL,CR,TAB,BS,FF,BEL,ESC
| /\\\n[ \t]*/ # line continuation
| /\\\\/ # escaped escape
| /./ # any other char
@@ -99,6 +101,21 @@
| /\\\\/ # escaped escape
| /./ # any other char
+B<FQ_STRING> ::= /q/ B<FQ_OPEN> B<FQ_CHARS> B<FQ_CLOSE>
+
+B<FQ_CHARS> ::= I<empty>
+ | B<FQ_CHAR> B<FQ_CHARS>
+
+B<FQ_CHAR> ::= /\\/ B<FQ_OPEN> # escaped open
+ | /\\/ B<FQ_CLOSE> # escaped close
+ | /\\\n[ \t]*/ # line contination
+ | /./ # any other char
+
+B<FQ_OPEN> ::= /[!"#$%&'()*+,-./:;<=>?@\[\\\]^_`{|}~]/
+
+B<FQ_CLOSE> ::= "B<FQ_OPEN> or corresponding closing char
+ ('}])>') if B<FQ_OPEN> is a char of '{[(<'"
+
B<PT_STRING> ::= B<PT_CHAR> B<PT_CHARS>
B<PT_CHARS> ::= I<empty>
@@ -121,6 +138,12 @@
B<CO_SH> ::= /#[^\n]*/
+Finally, any configuration line can have a trailing backslash character
+(C<\>) just before the newline character for simple line continuation.
+The backslash, the newline and (optionally) the leading whitespaces on
+the following line are silently obsorbed and as a side-effect continue
+the first line with the contents of the second lines.
+
=head2 CONFIGURATION EXAMPLE
A more intuitive description of the configuration syntax is perhaps given by
|
