gentoo-overlay/dev-vcs/gitstats/files/gitstats-0_pre131024-filter-invalid-unicode.patch

--- gitstats	2016-03-24 10:57:18.000000000 -0300
+++ gitstats.mod	2016-03-24 10:57:11.355016439 -0300
@@ -321,7 +321,7 @@
 
 		# Collect revision statistics
 		# Outputs "<stamp> <date> <time> <timezone> <author> '<' <mail> '>'"
-		lines = getpipeoutput(['git rev-list --pretty=format:"%%at %%ai %%aN <%%aE>" %s' % getcommitrange('HEAD'), 'grep -v ^commit']).split('\n')
+		lines = getpipeoutput(['git rev-list --pretty=format:"%%at %%ai %%aN <%%aE>" %s' % getcommitrange('HEAD'), 'grep -av ^commit | grep -ax \'.*\'']).split('\n')
 		for line in lines:
 			parts = line.split(' ', 4)
 			author = ''