Improve Lua support in etags

* lib-src/etags.c (Lua_functions): Skip spaces before looking for
"function".

* etc/NEWS: Mention improved Lua support by 'etags'.

* test/etags/lua-src/test.lua (test): Add tests for indented
function definitions.
* test/etags/ETAGS.good_1:
* test/etags/ETAGS.good_2:
* test/etags/ETAGS.good_3:
* test/etags/ETAGS.good_4:
* test/etags/ETAGS.good_5:
* test/etags/ETAGS.good_6:
* test/etags/CTAGS.good: Adapt to the modified Lua tests.

1 files changed, 5 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 0c9296acab4..c6b3374ded8 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1466,6 +1466,11 @@ qualified names by hand.
 Names of modules, classes, methods, and functions are tagged.
 Overloaded operators are also tagged.
 
+*** Improved support for Lua
+
+Etags now tags functions even if the "function" keyword follows some
+whitespace at line beginning.
+
 
 * Changes in Emacs 25.1 on Non-Free Operating Systems