Using % in page title causes error

Creating a page with % in the title causes a system error.

eg: create a new page with the name "test % page" via the Add Page link. This causes the following error:

Cause:
Caught an Ognl exception while setting property title

Stack Trace: [hide]

Caught an Ognl exception while setting property title

Referer URL: http://confluence.atlassian.com/pages/createpage.action?spaceKey=TEST

Build Information:
Uptime: 5 days, 33 minutes, 28 seconds
Version: 1.1.2
Build Number: 57

Server Information:
Application Server: Orion/2.0.2
Servlet Version: 2.2
Database Dialect: net.sf.hibernate.dialect.PostgreSQLDialect

Memory Information:
Total Memory: 299 MB
Free Memory: 22 MB
Used Memory: 277 MB

System Information:
System Date: Wednesday, 21 Jul 2004
System Time: 20:57:55
System Favourite Colour: Almond
Java Version: 1.4.2_04
Java Vendor: Sun Microsystems Inc.
JVM Version: 1.0
JVM Vendor: Sun Microsystems Inc.
JVM Implementation Version: 1.4.2_04-b05
Java Runtime: Java(TM) 2 Runtime Environment, Standard Edition
Java VM: Java HotSpot(TM) Server VM
User Name: j2ee
User Timezone: America/Chicago
Operating System: Linux 2.4.21-15.0.3.ELsmp
OS Architecture: i386

Request Information:
Request URL: http://atlassian01.metissian.com:10082/500page.jsp

• Scheme: http
• Server: atlassian01.metissian.com
• Port: 10082
• URI: /500page.jsp
• - Context Path:
• - Servlet Path: /500page.jsp
• - Path Info: null
• - Query String: null
  Request Attributes:
• com.atlassian.confluence.setup.SpringSessionInViewFilter.sessionFactory : true
• javax.servlet.error.exception : java.lang.RuntimeException: Caught an Ognl exception while setting property title
• javax.servlet.error.message : Caught an Ognl exception while setting property title
• os_securityfilter_already_filtered : true
• com.atlassian.johnson.filters.JohnsonFilter_already_filtered : true
• javax.servlet.error.request_uri : /pages/docreatepage.action
• javax.servlet.error.status_code : 500
• os_authstatus : null
• _sitemesh_filterapplied : true
• javax.servlet.error.servlet_name : action
• webwork.valueStack : com.opensymphony.xwork.util.OgnlValueStack@d3ac87
• loginfilter.already.filtered : true
• atlassian.core.seraph.original.url : /pages/docreatepage.action
• javax.servlet.jsp.jspException : java.lang.RuntimeException: Caught an Ognl exception while setting property title

Request Logging:
3 log statements generated by this request:
[ERROR] Wed Jul 21 20:57:55 CDT 2004 [com.opensymphony.xwork.util.CompoundRootAccessor] Caught an Ognl exception while setting property title

ognl.MethodFailedException: Method "setTitle" failed for object com.atlassian.confluence.pages.actions.CreatePageAction@c367cc [java.lang.IllegalArgumentException: URLDecoder: Illegal hex characters in escape (%) pattern - For input string: " p"]
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:796)
at ognl.OgnlRuntime.setMethodValue(OgnlRuntime.java:937)
at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:76)
at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:132)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:1629)
at com.opensymphony.xwork.util.CompoundRootAccessor.setProperty(CompoundRootAccessor.java:43)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:1629)
at ognl.ASTProperty.setValueBody(ASTProperty.java:105)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:180)
at ognl.SimpleNode.setValue(SimpleNode.java:230)
at ognl.Ognl.setValue(Ognl.java:476)
at com.opensymphony.xwork.util.OgnlValueStack.setValue(OgnlValueStack.java:114)
at com.opensymphony.xwork.util.OgnlValueStack.setValue(OgnlValueStack.java:98)
at com.opensymphony.xwork.interceptor.ParametersInterceptor.before(ParametersInterceptor.java:66)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:33)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
at com.atlassian.confluence.core.ConfluenceAutowireInterceptor.intercept(ConfluenceAutowireInterceptor.java:25)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)

[ERROR] Wed Jul 21 20:57:55 CDT 2004 [com.atlassian.confluence.util.XWorkTransactionInterceptor] Invoking rollback for transaction on action '/pages/docreatepage.action (CreatePageAction.doAdd())' due to throwable [java.lang.RuntimeException: Caught an Ognl exception while setting property title]
[ERROR] Wed Jul 21 20:57:55 CDT 2004 [com.opensymphony.webwork.dispatcher.ServletDispatcher] Could not execute action

java.lang.RuntimeException: Caught an Ognl exception while setting property title
at com.opensymphony.xwork.util.CompoundRootAccessor.setProperty(CompoundRootAccessor.java:51)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:1629)
at ognl.ASTProperty.setValueBody(ASTProperty.java:105)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:180)
at ognl.SimpleNode.setValue(SimpleNode.java:230)
at ognl.Ognl.setValue(Ognl.java:476)
at com.opensymphony.xwork.util.OgnlValueStack.setValue(OgnlValueStack.java:114)
at com.opensymphony.xwork.util.OgnlValueStack.setValue(OgnlValueStack.java:98)
at com.opensymphony.xwork.interceptor.ParametersInterceptor.before(ParametersInterceptor.java:66)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:33)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
at com.atlassian.confluence.core.ConfluenceAutowireInterceptor.intercept(ConfluenceAutowireInterceptor.java:25)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(AroundInterceptor.java:34)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)
at com.atlassian.confluence.util.XWorkTransactionInterceptor.intercept(XWorkTransactionInterceptor.java:133)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionInvocation.java:163)