When convertWebIntelligentPlainTextToHtml is called with an

explicit tab_width we try to make an integer of that ('2' -> 2).
When that fails we use the default of 4.

svn path=/plone.intelligenttext/trunk/; revision=21685

docs/HISTORY.txt

@@ -4,6 +4,11 @@ Changelog for plone.intelligenttext
 
 plone.intelligenttext - 1.0.2 Unreleased
 
+    - When convertWebIntelligentPlainTextToHtml is called with an
+      explicit tab_width we try to make an integer of that ('2' -> 2).
+      When that fails we use the default of 4.
+      [maurits]
+
     - Minor change in code path, really only to get 100 percent test
       coverage.
       [maurits]

plone/intelligenttext/README.txt

@@ -147,13 +147,40 @@ https is accepted.
     >>> convertWebIntelligentPlainTextToHtml("https://localhost")
     '<a href="https://localhost" rel="nofollow">https://localhost</a>'
 
-
 Unicode should be fine too.
 
     >>> text = u"Línk tö http://foo.ni"
     >>> convertWebIntelligentPlainTextToHtml(text)
     'L&Atilde;&shy;nk t&Atilde;&para; <a href="http://foo.ni" rel="nofollow">http://foo.ni</a>'
 
+Leading whitespace is converted to non breaking spaces to preserve
+indentation:
+
+    >>> text = "Some text.\n    And some indentation."
+    >>> convertWebIntelligentPlainTextToHtml(text)
+    'Some text.<br />&nbsp;&nbsp;&nbsp;&nbsp;And some indentation.'
+
+Leading tabs are converted to spaces.  The default is 4:
+
+    >>> text = "Before the tab:\n\tand after the tab."
+    >>> convertWebIntelligentPlainTextToHtml(text)
+    'Before the tab:<br />&nbsp;&nbsp;&nbsp;&nbsp;and after the tab.'
+
+You can specify a different tab width:
+
+    >>> convertWebIntelligentPlainTextToHtml(text, tab_width=2)
+    'Before the tab:<br />&nbsp;&nbsp;and after the tab.'
+
+In case the tab width is not an integer, we try to convert it:
+
+    >>> convertWebIntelligentPlainTextToHtml(text, tab_width='2')
+    'Before the tab:<br />&nbsp;&nbsp;and after the tab.'
+
+When that fails we fall back to 4 spaces:
+
+    >>> convertWebIntelligentPlainTextToHtml(text, tab_width='1.5')
+    'Before the tab:<br />&nbsp;&nbsp;&nbsp;&nbsp;and after the tab.'
+
 
 Html to intelligent text
 ------------------------

plone/intelligenttext/transforms.py

@@ -4,6 +4,11 @@
 def convertWebIntelligentPlainTextToHtml(orig, tab_width=4):
     """Converts text/x-web-intelligent to text/html
     """
+    try:
+        # tab_width could be a string like '4'
+        tab_width = int(tab_width)
+    except ValueError:
+        tab_width=4
     # very long urls are abbreviated to allow nicer layout
     def abbreviateUrl(url, max = 60,  ellipsis = "[…]"):
         if len(url) < max: