(rfc2047-q-encode-region): Exclude especials from

characters not encoded, and make the list more legible.

diff --git a/lisp/rfc2047.el b/lisp/rfc2047.el
index 87de840..e7a257c 100644 (file)
--- a/lisp/rfc2047.el
+++ b/lisp/rfc2047.el
@@ -562,8 +562,13 @@ By default, the region is treated as containing addresses (see
         b e nil
         ;; = (\075), _ (\137), ? (\077) are used in the encoded word.
         ;; Avoid using 8bit characters.
-        ;; Equivalent to "^\000-\007\011\013\015-\037\200-\377=_?"
-        "\010\012\014\040-\074\076\100-\136\140-\177")
+        ;; This list excludes `especials' (see the RFC2047 syntax),
+        ;; meaning that some characters in non-structured fields will
+        ;; get encoded when they con't need to be.  The following is
+        ;; what it used to be.
+;;;     ;; Equivalent to "^\000-\007\011\013\015-\037\200-\377=_?"
+;;;     "\010\012\014\040-\074\076\100-\136\140-\177")
+        "-\b\n\f !#-'*+0-9A-Z\\^`-~\d")
        (subst-char-in-region (point-min) (point-max) ?  ?_)
        ;; The size of QP encapsulation is about 20, so set limit to
        ;; 56=76-20.