t / t4110 / patch1.patchon commit log --grep: use the same helper to set -E/-F options as "git grep" (34a4ae5)
   1diff --git a/new.txt b/new.txt
   2new file mode 100644
   3--- /dev/null
   4+++ b/new.txt
   5@@ -0,0 +1,12 @@
   6+a1
   7+a11
   8+a111
   9+a1111
  10+b1
  11+b11
  12+b111
  13+b1111
  14+c1
  15+c11
  16+c111
  17+c1111