Problems with build.properties

i have this build.properties

source.. = src/,\
lang/
output.. = bin/
bin.includes = META-INF/,\
.,\
build.properties,\
icons/,\
plugin.xml,\
images/,\
lang/,\
lib/
bin.excludes = lib/log4j-1.2.14.jar
jars.compile.order = .

i have a file config.properties in the lang directory. When i compile withe eclipse pde, i obtain a jar like that:

toto.jar:

-lang

• config.properties
  config.properties

so i have 2 files config.properties
but when i compile with tycho, i obtain

toto.jar:

-lang

• config.properties

i have not the config.properties at the root of the jar.

and the other problem is the "bin.excludes = lib/log4j-1.2.14.jar" is not exclude in the result jar with tycho.