On Tue, Oct 27, 2015 at 1:17 PM, Roy T. Fielding <field...@gbiv.com> wrote:
> > On Oct 26, 2015, at 11:45 PM, jaillet...@apache.org wrote: > > > > Author: jailletc36 > > Date: Tue Oct 27 06:45:03 2015 > > New Revision: 1710723 > > > > URL: http://svn.apache.org/viewvc?rev=1710723&view=rev > > Log: > > RFC2616 defines #rules as: > > #rule > > A construct "#" is defined, similar to "*", for defining lists of > > elements. The full form is "<n>#<m>element" indicating at least > > <n> and at most <m> elements, each separated by one or more commas > > (",") and OPTIONAL linear white space (LWS). This makes the usual > > form of lists very easy; a rule such as > > ( *LWS element *( *LWS "," *LWS element )) > > can be shown as > > 1#element > > > > It also defines Linear White Space (LWS) as: > > LWS = [CRLF] 1*( SP | HT ) > > > > > > The actual implementation only accepts SP (Space) and not HT (Horizontal > Tab) when parsing cache related header fields (i.e. "Vary", "Cache-Control" > and "Pragma") > > Well, to be more accurate: RFC7230 defines these (2616 no longer applies) > and > the original algorithm did handle HT. My bet is that someone screwed up an > automated TAB -> two space conversion and the code change got lost in the > noise. > Interestingly it was only introduced in a recent commit (2 yrs ago) with the defect, one might guess that the vi/emacs template did the damage when the text was pasted in. See also server.c/protocol.c@920 on trunk, which has the correct HT handling, explicitly.
