docs/sphinx/qmp_lexer: Generalize elision syntax

Accept "... lorem ipsum ..."  in addition to "...".

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20250404121413.1743790-7-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

docs/devel/qapi-code-gen.rst

@@ -1029,7 +1029,9 @@ used.
 QMP Examples can be added by using the ``.. qmp-example::`` directive.
 In its simplest form, this can be used to contain a single QMP code
 block which accepts standard JSON syntax with additional server
-directionality indicators (``->`` and ``<-``), and elisions (``...``).
+directionality indicators (``->`` and ``<-``), and elisions.  An
+elision is commonly ``...``, but it can also be or a pair of ``...``
+with text in between.
 
 Optionally, a plaintext title may be provided by using the ``:title:``
 directive option.  If the title is omitted, the example title will
@@ -1062,7 +1064,7 @@ For example::
   #               "device": "ide0-hd0",
   #               ...
   #             }
-  #             ...
+  #             ... more ...
   #          ] }
   #
   #    Above, lengthy output has been omitted for brevity.

docs/sphinx/qmp_lexer.py

@@ -24,7 +24,7 @@ class QMPExampleMarkersLexer(RegexLexer):
         'root': [
             (r'-> ', token.Generic.Prompt),
             (r'<- ', token.Generic.Prompt),
-            (r' ?\.{3} ?', token.Generic.Prompt),
+            (r'\.{3}( .* \.{3})?', token.Generic.Prompt),
         ]
     }
 

tests/qapi-schema/doc-good.json

@@ -212,7 +212,7 @@
 #
 #    -> "this example"
 #
-#    <- "has no title"
+#    <- ... has no title ...
 ##
 { 'command': 'cmd-boxed', 'boxed': true,
   'data': 'Object',

tests/qapi-schema/doc-good.out

@@ -217,7 +217,7 @@ another feature
 
    -> "this example"
 
-   <- "has no title"
+   <- ... has no title ...
 doc symbol=EVT_BOXED
     body=
 

tests/qapi-schema/doc-good.txt

@@ -264,7 +264,7 @@ Example::
 
    -> "this example"
 
-   <- "has no title"
+   <- ... has no title ...
 
 
 "EVT_BOXED" (Event)