Issue Type: Bug Bug
Affects Versions: 1.0.7
Assignee: Logback dev list
Created: 19/Sep/12 5:30 PM
Description: Configuration file specified by "logback.configurationFile" system property isn't applied when it doesn't have a .xml filename extension (file is perfectly valid text/xml, of course).

Log events generated by app are silently "fed" without a notice. No error or warning is reported regardless a "logback.debug" system property is set to "true". Full output on stdout by Logback is only the following (replace paths to your context):

17:23:19,659 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [/home/libor/workspace/plexflow/misc/templates/logback.ui.xml2] at [
file:/home/libor/workspace/plexflow/misc/templates/logback.ui.xml2]

That's all. Actual log events events are logged nowhere in that case.
Environment: libor@pc-libor ~$ java -version
java version "1.7.0_04"
Java(TM) SE Runtime Environment (build 1.7.0_04-b20)
Java HotSpot(TM) Server VM (build 23.0-b21, mixed mode)
libor@pc-libor ~$ uname -a
Linux pc-libor 3.2.0-30-generic-pae #48-Ubuntu SMP Fri Aug 24 17:14:09 UTC 2012 i686 i686 i386 GNU/Linux
Project: logback
Priority: Major Major
Reporter: Libor Jelinek
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