Fix string documentation for 3.0

doc/sphinx/installation/upgrade.rst

@@ -13,6 +13,10 @@ string concatenation operator
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 String concatenation did not have an operator previously, but this has now been changed to ``+``.
 
+no more %-escapes in strings
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+To simplify strings, the %-encoding has been removed. If you need non-printable characters, you need to use inline C.
+
 ``log`` moved to the std vmod
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

doc/sphinx/reference/vcl.rst

@@ -39,11 +39,11 @@ In addition to the C-like assignment (=), comparison (==, !=) and
 boolean (!, && and \|\|) operators, VCL supports both regular
 expression and ACL matching using the ~ and the !~ operators.
 
-Basic strings are enclosed in " ... " and uses URL-style %-escapes.
+Basic strings are enclosed in " ... ", and may not contain newlines.
 
-Long strings are enclosed in {" ... "} and do not have an escape
-character. They may contain any character including ", newline and
-other control characters except for the NUL (0x00) character.
+Long strings are enclosed in {" ... "}. They may contain any
+character including ", newline and other control characters except
+for the NUL (0x00) character.
 
 Unlike C and Perl, the backslash (\) character has no special meaning
 in strings in VCL, so it can be freely used in regular expressions

lib/libvcl/vcc_token.c

@@ -492,7 +492,7 @@ vcc_Lexer(struct vcc *tl, struct source *sp)
 			continue;
 		}
 
-		/* Match strings, with \\ and \" escapes */
+		/* Match strings */
 		if (*p == '"') {
 			for (q = p + 1; q < sp->e; q++) {
 				if (*q == '"') {