Revise the markup related to the grammar productions to increase the

level of predictability.  This is not really "good" markup, but is arguably
better than we had before.
This closes SF bug #523117.

1 files changed, 21 insertions, 17 deletions

diff --git a/Doc/ref/ref7.tex b/Doc/ref/ref7.tex
index f22be71..eeff1aa 100644
--- a/Doc/ref/ref7.tex
+++ b/Doc/ref/ref7.tex
@@ -42,8 +42,12 @@ Summarizing:
 
 \begin{productionlist}
   \production{compound_stmt}
-             {\token{if_stmt} | \token{while_stmt} | \token{for_stmt}
-              | \token{try_stmt} | \token{funcdef} | \token{classdef}}
+             {\token{if_stmt}}
+  \productioncont{| \token{while_stmt}}
+  \productioncont{| \token{for_stmt}}
+  \productioncont{| \token{try_stmt}}
+  \productioncont{| \token{funcdef}}
+  \productioncont{| \token{classdef}}
   \production{suite}
              {\token{stmt_list} NEWLINE
               | NEWLINE INDENT \token{statement}+ DEDENT}
@@ -73,9 +77,9 @@ The \keyword{if} statement is used for conditional execution:
 
 \begin{productionlist}
   \production{if_stmt}
-             {"if" \token{expression} ":" \token{suite}
-              ( "elif" \token{expression} ":" \token{suite} )*
-              ["else" ":" \token{suite}]}
+             {"if" \token{expression} ":" \token{suite}}
+  \productioncont{( "elif" \token{expression} ":" \token{suite} )*}
+  \productioncont{["else" ":" \token{suite}]}
 \end{productionlist}
 
 It selects exactly one of the suites by evaluating the expressions one
@@ -97,8 +101,8 @@ as an expression is true:
 
 \begin{productionlist}
   \production{while_stmt}
-             {"while" \token{expression} ":" \token{suite}
-               ["else" ":" \token{suite}]}
+             {"while" \token{expression} ":" \token{suite}}
+  \productioncont{["else" ":" \token{suite}]}
 \end{productionlist}
 
 This repeatedly tests the expression and, if it is true, executes the
@@ -126,8 +130,8 @@ sequence (such as a string, tuple or list) or other iterable object:
 \begin{productionlist}
   \production{for_stmt}
              {"for" \token{target_list} "in" \token{expression_list}
-              ":" \token{suite}
-              ["else" ":" \token{suite}]}
+              ":" \token{suite}}
+  \productioncont{["else" ":" \token{suite}]}
 \end{productionlist}
 
 The expression list is evaluated once; it should yield a sequence.  The
@@ -192,10 +196,10 @@ code for a group of statements:
   \production{try_stmt}
              {\token{try_exc_stmt} | \token{try_fin_stmt}}
   \production{try_exc_stmt}
-             {"try" ":" \token{suite}
-              ("except" [\token{expression} ["," \token{target}]] ":"
-              \token{suite})+
-              ["else" ":" \token{suite}]}
+             {"try" ":" \token{suite}}
+  \productioncont{("except" [\token{expression}
+                             ["," \token{target}]] ":" \token{suite})+}
+  \productioncont{["else" ":" \token{suite}]}
   \production{try_fin_stmt}
              {"try" ":" \token{suite}
               "finally" ":" \token{suite}}
@@ -310,10 +314,10 @@ section \ref{types}):
              {"def" \token{funcname} "(" [\token{parameter_list}] ")"
               ":" \token{suite}}
   \production{parameter_list}
-             {(\token{defparameter} ",")*
-              ("*" \token{identifier} [, "**" \token{identifier}]
-               | "**" \token{identifier}
-               | \token{defparameter} [","])}
+             {(\token{defparameter} ",")*}
+  \productioncont{("*" \token{identifier} [, "**" \token{identifier}]}
+  \productioncont{| "**" \token{identifier}
+                  | \token{defparameter} [","])}
   \production{defparameter}
              {\token{parameter} ["=" \token{expression}]}
   \production{sublist}