doc: correct example concerning "hg purge" alias in man page "hgrc.5"
The "hg purge" alias as currently described in "hgrc.5" only works, if
the caller's current working directory is identical to the repository's
root directory.
This patch slightly modifies the example by adding an empty pattern as a
file argument to the "hg status" command, thus forcing this command to
list the affected files relative to the current directory.
--- a/mercurial/help/config.txt Thu Feb 18 22:32:18 2016 -0500
+++ b/mercurial/help/config.txt Sat Feb 20 17:32:26 2016 +0100
@@ -276,7 +276,7 @@
will let you do ``hg echo foo`` to have ``foo`` printed in your
terminal. A better example might be::
- purge = !$HG status --no-status --unknown -0 | xargs -0 rm
+ purge = !$HG status --no-status --unknown -0 re: | xargs -0 rm
which will make ``hg purge`` delete all unknown files in the
repository in the same manner as the purge extension.