[tor-commits] [torspec] branch main updated: Clarify and tidy up KeywordLine Argument

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dgoulet pushed a commit to branch main
in repository torspec.

The following commit(s) were added to refs/heads/main by this push:
     new 8f7f6f9  Clarify and tidy up KeywordLine Argument
8f7f6f9 is described below

commit 8f7f6f9e97a78f16454a155aef9dc315f608f925
Author: Ian Jackson <ijackson at chiark.greenend.org.uk>
AuthorDate: Fri Jan 20 18:13:47 2023 +0000

    Clarify and tidy up KeywordLine Argument
    
    * Introduce the notion of Argument, which is relied on in the
      rest of the document, but not defined here formally.
    
    Spec changes implied by this diff:
    
    * Forbid the arguments from containing form feeds, carriage returns,
      and vertical tabs.
    
    * Forbid trailing whitespace after the last argument.  I'm not sure
      whether this is correct, but it seems anomalous to permit it for
      only for keyword lines with arguments, and not anywhere else.
---
 dir-spec.txt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/dir-spec.txt b/dir-spec.txt
index d6dae43..0ab0c98 100644
--- a/dir-spec.txt
+++ b/dir-spec.txt
@@ -280,11 +280,12 @@ Table of Contents
     NL = The ascii LF character (hex value 0x0a).
     Document ::= (Item | NL)+
     Item ::= KeywordLine Object*
-    KeywordLine ::= Keyword NL | Keyword WS ArgumentChar+ NL
+    KeywordLine ::= Keyword (WS Argument)* NL
     Keyword = KeywordStart KeywordChar*
     KeywordStart ::= 'A' ... 'Z' | 'a' ... 'z' | '0' ... '9'
     KeywordChar ::= KeywordStart | '-'
-    ArgumentChar ::= any printing ASCII character except NL.
+    Argument := ArgumentChar+
+    ArgumentChar ::= any graphical printing ASCII character.
     WS = (SP | TAB)+
     Object ::= BeginLine Base64-encoded-data EndLine
     BeginLine ::= "-----BEGIN " Keyword (" " Keyword)* "-----" NL

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