commit 4044ed1ea05bb1f4fba8381660737f2051e1e07b
author Mike Frysinger <vapier@google.com> Fri Oct 16 13:53:04 2015 -0400
committer Mike Frysinger <vapier@google.com> Fri Oct 16 13:53:04 2015 -0400
tree 05d3462a157bd5925723774fd29d5ed8f176b042
parent b962e7e33fea00714bd9e9f3e8f58a9897b69f06

gen_constants: simplify grep by using ERE by default

Rather than use a BRE and escape specific chars up to ERE, default
to ERE by using the -E flag and drop all the \ chars.  This makes
the code more readable.

Change-Id: I53342db748f1418194e87b519324f14eb70858c1

gen_constants.sh

diff --git a/gen_constants.sh b/gen_constants.sh
index 8b311e3..9b2310b 100755
--- a/gen_constants.sh
+++ b/gen_constants.sh
@@ -55,7 +55,7 @@
 $(echo "$INCLUDES" | \
   ${CC} -dD - -E | \
   grep '^#define [[:upper:]][[:upper:]0-9_]* ' | \
-  grep -v '\(SIGRTMAX\|SIGRTMIN\|SIG_\|NULL\)' | \
+  grep -Ev '(SIGRTMAX|SIGRTMIN|SIG_|NULL)' | \
   sort | \
   uniq | \
   sed -e "${SED_MULTILINE}")