On Thu, 2020-11-05 at 15:43 +0530, Mayuresh wrote: > On Thu, Nov 05, 2020 at 02:20:07AM -0600, Bruce Anderson wrote: > > Use: > > * ^List-Id:.*current-users.NetBSD.org > > I adopted procmail, but curious why angled brackets are added to a string > of the domain name form.
See rfc 2822 Special characters used in other parts of the syntax ------------------------------ 3.2.1. Primitive Tokens [Pages 9 and 10 BA-] https://tools.ietf.org/html/rfc2822#section-3.2.1 specials = "(" / ")" / ; Special characters used in "<" / ">" / ; other parts of the syntax "[" / "]" / ":" / ";" / "@" / "\" / "," / "." / DQUOTE .... 3.2.5. Quoted strings https://tools.ietf.org/html/rfc2822#section-3.2.5 .... Strings of characters that include characters other than those allowed in atoms may be represented in a quoted string format, where the characters are surrounded by quote (DQUOTE, ASCII value 34) characters. qtext = NO-WS-CTL / ; Non white space controls %d33 / ; The rest of the US-ASCII %d35-91 / ; characters not including "\" %d93-126 ; or the quote character qcontent = qtext / quoted-pair quoted-string = [CFWS] DQUOTE *([FWS] qcontent) [FWS] DQUOTE [CFWS] .... ************************************** examples: List-Id: NASA News Releases <hqnews.newsletters.nasa.gov> List-Id: General discussion <gnome-list.gnome.org> Better: List-Id: "General discussion" <gnome-list.gnome.org>
