[Docutils-checkins] SF.net SVN: docutils:[9481] trunk/docutils

[<mi...@us...>]

Revision: 9481
          http://sourceforge.net/p/docutils/code/9481
Author:   milde
Date:     2023-11-19 21:19:20 +0000 (Sun, 19 Nov 2023)
Log Message:
-----------
Smartquotes optimizations part 3.

Skip regexp substitutions if there are no quotes to "educate".

Together, the optimizations bring down the time spent on the smartquotes transformation from
20% to 10% of the total rst2html5 conversion time.
(Tested with py-spy on `builthtml` of the Docutils docs directory.)

Modified Paths:
--------------
    trunk/docutils/HISTORY.txt
    trunk/docutils/docutils/utils/smartquotes.py

Modified: trunk/docutils/HISTORY.txt
===================================================================
--- trunk/docutils/HISTORY.txt	2023-11-19 09:44:17 UTC (rev 9480)
+++ trunk/docutils/HISTORY.txt	2023-11-19 21:19:20 UTC (rev 9481)
@@ -74,7 +74,8 @@
 * docutils/utils/smartquotes.py
 
   - Pre-compile regexps once, not with every call of `educateQuotes()`
-    (patch #206 by Chris Sewell). Simplify regexps.
+    (patch #206 by Chris Sewell); simplify regexps; skip replacement
+    rules if there is nothing to replace.
 
 * docutils/writers/latex2e/__init__.py
 

Modified: trunk/docutils/docutils/utils/smartquotes.py
===================================================================
--- trunk/docutils/docutils/utils/smartquotes.py	2023-11-19 09:44:17 UTC (rev 9480)
+++ trunk/docutils/docutils/utils/smartquotes.py	2023-11-19 21:19:20 UTC (rev 9481)
@@ -142,7 +142,7 @@
 - Straight quotes ( " and ' ) into "curly" quote characters
 - Backticks-style quotes (\`\`like this'') into "curly" quote characters
 - Dashes (``--`` and ``---``) into en- and em-dash entities
-- Three consecutive dots (``...`` or ``. . .``) into an ellipsis entity
+- Three consecutive dots (``...`` or ``. . .``) into an ellipsis ``…``.
 
 This means you can write, edit, and save your posts using plain old
 ASCII straight quotes, plain dashes, and plain dots, but your published
@@ -548,6 +548,9 @@
                     """, re.VERBOSE)
 
 
+regexes = RegularExpressions()
+
+
 default_smartypants_attr = '1'
 
 
@@ -679,10 +682,11 @@
     Example input:  "Isn't this fun?"
     Example output: “Isn’t this fun?“
     """
-
     smart = smartchars(language)
-    regexes = RegularExpressions()
 
+    if not re.search('[-"\']', text):
+        return text
+
     # Special case if the very first character is a quote
     # followed by punctuation at a non-word-break. Use closing quotes.
     # TODO: example (when does this match?)

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