# B.12 DefaultExcludes Alters the default excludes for all subsequent processing in the build, and prints out the current default excludes if desired. Table B.14:聽Attributes NameTypeDescriptionDefaultRequired`echo``Boolean`whether or not to print out the default excludes.`false`attribute "true" required if no other attribute specified`default``Boolean`go back to hard wired default excludesn/aattribute "true" required if no other attribute specified`add``String`the pattern to add to the default excludesn/aif no other attribute is specified`remove``String`remove the specified pattern from the default excludesn/aif no other attribute is specified B.12.1 Examples Print out the default excludes `<defaultexcludes echo="true"/>`Print out the default excludes and exclude all `*.bak` files in all further processing `<defaultexcludes echo="true" add="**/*.bak"/>`Silently allow several fileset based tasks to operate on emacs backup files and then restore normal behavior ``` <defaultexcludes remove="**/*~"/> (do several fileset based tasks here) <defaultexcludes default="true"/> ```