impl/src/main/java/org/apache/myfaces/view/facelets/compiler/TagLibraryConfig.java [83:200]:
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            _acceptPatterns = loadAcceptPattern(externalContext);

            _extension = loadFaceletExtension(externalContext);
            
            String defaultSuffixes = WebConfigParamUtils.getStringInitParameter(externalContext,
                    ViewHandler.FACELETS_SUFFIX_PARAM_NAME, ViewHandler.DEFAULT_FACELETS_SUFFIX );
            
            _defaultSuffixesArray = StringUtils.splitShortString(defaultSuffixes, ' ');
            
            boolean faceletsExtensionFound = false;
            for (String ext : _defaultSuffixesArray)
            {
                if (_extension.equals(ext))
                {
                    faceletsExtensionFound = true;
                    break;
                }
            }
            if (!faceletsExtensionFound)
            {
                _defaultSuffixesArray = (String[]) ArrayUtils.concat(_defaultSuffixesArray, new String[]{_extension});
            }
        }
        
        /**
         * Load and compile a regular expression pattern built from the Facelet view mapping parameters.
         * 
         * @param context
         *            the application's external context
         * 
         * @return the compiled regular expression
         */
        private Pattern loadAcceptPattern(ExternalContext context)
        {
            assert context != null;

            String mappings = context.getInitParameter(ViewHandler.FACELETS_VIEW_MAPPINGS_PARAM_NAME);
            if (mappings == null)
            {
                return null;
            }

            // Make sure the mappings contain something
            mappings = mappings.trim();
            if (mappings.length() == 0)
            {
                return null;
            }

            return Pattern.compile(toRegex(mappings));
        }

        private String loadFaceletExtension(ExternalContext context)
        {
            assert context != null;

            String suffix = context.getInitParameter(ViewHandler.FACELETS_SUFFIX_PARAM_NAME);
            if (suffix == null)
            {
                suffix = ViewHandler.DEFAULT_FACELETS_SUFFIX;
            }
            else
            {
                suffix = suffix.trim();
                if (suffix.length() == 0)
                {
                    suffix = ViewHandler.DEFAULT_FACELETS_SUFFIX;
                }
            }

            return suffix;
        }
        
        /**
         * Convert the specified mapping string to an equivalent regular expression.
         * 
         * @param mappings
         *            le mapping string
         * 
         * @return an uncompiled regular expression representing the mappings
         */
        private String toRegex(String mappings)
        {
            assert mappings != null;

            // Get rid of spaces
            mappings = mappings.replaceAll("\\s", "");

            // Escape '.'
            mappings = mappings.replaceAll("\\.", "\\\\.");

            // Change '*' to '.*' to represent any match
            mappings = mappings.replaceAll("\\*", ".*");

            // Split the mappings by changing ';' to '|'
            mappings = mappings.replaceAll(";", "|");

            return mappings;
        }
        
        public boolean handles(String resourceName)
        {
            if (resourceName == null)
            {
                return false;
            }
            // Check extension first as it's faster than mappings
            if (resourceName.endsWith(_extension))
            {
                // If the extension matches, it's a Facelet viewId.
                return true;
            }

            // Otherwise, try to match the view identifier with the facelet mappings
            return _acceptPatterns != null && _acceptPatterns.matcher(resourceName).matches();
        }
        
        @Override
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impl/src/main/java/org/apache/myfaces/view/facelets/tag/composite/CompositeResourceLibrary.java [70:187]:
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        _acceptPatterns = loadAcceptPattern(externalContext);

        _extension = loadFaceletExtension(externalContext);
        
        String defaultSuffixes = WebConfigParamUtils.getStringInitParameter(externalContext,
                ViewHandler.FACELETS_SUFFIX_PARAM_NAME, ViewHandler.DEFAULT_FACELETS_SUFFIX );
        
        _defaultSuffixesArray = StringUtils.splitShortString(defaultSuffixes, ' ');
        
        boolean faceletsExtensionFound = false;
        for (String ext : _defaultSuffixesArray)
        {
            if (_extension.equals(ext))
            {
                faceletsExtensionFound = true;
                break;
            }
        }
        if (!faceletsExtensionFound)
        {
            _defaultSuffixesArray = (String[]) ArrayUtils.concat(_defaultSuffixesArray, new String[]{_extension});
        }
    }
    
    /**
     * Load and compile a regular expression pattern built from the Facelet view mapping parameters.
     * 
     * @param context
     *            the application's external context
     * 
     * @return the compiled regular expression
     */
    private Pattern loadAcceptPattern(ExternalContext context)
    {
        assert context != null;

        String mappings = context.getInitParameter(ViewHandler.FACELETS_VIEW_MAPPINGS_PARAM_NAME);
        if (mappings == null)
        {
            return null;
        }

        // Make sure the mappings contain something
        mappings = mappings.trim();
        if (mappings.length() == 0)
        {
            return null;
        }

        return Pattern.compile(toRegex(mappings));
    }

    private String loadFaceletExtension(ExternalContext context)
    {
        assert context != null;

        String suffix = context.getInitParameter(ViewHandler.FACELETS_SUFFIX_PARAM_NAME);
        if (suffix == null)
        {
            suffix = ViewHandler.DEFAULT_FACELETS_SUFFIX;
        }
        else
        {
            suffix = suffix.trim();
            if (suffix.length() == 0)
            {
                suffix = ViewHandler.DEFAULT_FACELETS_SUFFIX;
            }
        }

        return suffix;
    }
    
    /**
     * Convert the specified mapping string to an equivalent regular expression.
     * 
     * @param mappings
     *            le mapping string
     * 
     * @return an uncompiled regular expression representing the mappings
     */
    private String toRegex(String mappings)
    {
        assert mappings != null;

        // Get rid of spaces
        mappings = mappings.replaceAll("\\s", "");

        // Escape '.'
        mappings = mappings.replaceAll("\\.", "\\\\.");

        // Change '*' to '.*' to represent any match
        mappings = mappings.replaceAll("\\*", ".*");

        // Split the mappings by changing ';' to '|'
        mappings = mappings.replaceAll(";", "|");

        return mappings;
    }
    
    public boolean handles(String resourceName)
    {
        if (resourceName == null)
        {
            return false;
        }
        // Check extension first as it's faster than mappings
        if (resourceName.endsWith(_extension))
        {
            // If the extension matches, it's a Facelet viewId.
            return true;
        }

        // Otherwise, try to match the view identifier with the facelet mappings
        return _acceptPatterns != null && _acceptPatterns.matcher(resourceName).matches();
    }

    @Override
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