csfilter: do not abort when pkg name contains '+'

Author: kdudka

csfilter.cc

@@ -81,7 +81,7 @@ struct MsgFilter::Private {
 
     Private():
         ignorePath(false),
-        strKrn("^[a-zA-Z]+"),
+        strKrn("^[a-zA-Z+]+"),
         reKrn(strKrn),
         reDir("^([^:]*/)"),
         reFile("[^/]+$"),

tests/CMakeLists.txt

@@ -179,3 +179,4 @@ test_csdiff(diff-misc                               03)
 test_csdiff(diff-misc                               04)
 test_csdiff(diff-misc                               05)
 test_csdiff(diff-misc                               06)
+test_csdiff(diff-misc                               07)

tests/diff-misc/07-add-z.err

@@ -0,0 +1 @@
+07-old.err