lua: fix ^C^C signal bug

Add sigaction powerpatch option.

Closes #20657.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/Library/Formula/lua.rb b/Library/Formula/lua.rb
index 805421dfe..833fc5d75 100644
--- a/Library/Formula/lua.rb
+++ b/Library/Formula/lua.rb
@@ -14,6 +14,7 @@ class Lua < Formula
 
   option :universal
   option 'completion', 'Enables advanced readline support'
+  option 'sigaction', 'Signal handling improvements for interpreter'
 
   # Be sure to build a dylib, or else runtime modules will pull in another static copy of liblua = crashy
   # See: https://github.com/mxcl/homebrew/pull/5043
@@ -24,6 +25,11 @@ class Lua < Formula
     if build.include? 'completion'
       p << 'http://luajit.org/patches/lua-5.1.4-advanced_readline.patch'
     end
+    # sigaction provided by posix signalling power patch from
+    # http://lua-users.org/wiki/LuaPowerPatches
+    if build.include? 'sigaction'
+      p << 'http://lua-users.org/files/wiki_insecure/power_patches/5.1/sig_catch.patch'
+    end
     p
   end