Adding basic Lua scripting basics to mutt

* adding two commands:
 - lua: to parse a line of lua code
 - lua-source: to load and parse a lua file
* binding two mutt functions in lua:
 - mutt_message and
 - mutt_error

cf #153

Signed-off-by: Guyzmo <guyzmo+github+pub@m0g.net>

Makefile.am

@@ -69,7 +69,7 @@ EXTRA_mutt_SOURCES = account.c bcache.c compress.c crypt-gpgme.c crypt-mod-pgp-c
 	mutt_idna.c mutt_sasl.c mutt_socket.c mutt_ssl.c mutt_ssl_gnutls.c \
 	mutt_tunnel.c pgp.c pgpinvoke.c pgpkey.c pgplib.c pgpmicalg.c \
 	pgppacket.c pop.c pop_auth.c pop_lib.c remailer.c resize.c sha1.c \
-	mutt-lua.c nntp.c newsrc.c \
+	mutt_lua.c nntp.c newsrc.c \
 	sidebar.c smime.c smtp.c utf8.c wcwidth.c \
 	bcache.h browser.h hcache.h mbyte.h mutt_idna.h remailer.h url.h
 
@@ -81,7 +81,7 @@ EXTRA_DIST = COPYRIGHT LICENSE.md OPS OPS.PGP OPS.CRYPT OPS.SMIME TODO UPDATING
 	mutt_regex.h mutt_sasl.h mutt_sasl_plain.h mutt_socket.h mutt_ssl.h \
 	mutt_tunnel.h mx.h pager.h pgp.h pop.h protos.h rfc1524.h rfc2047.h \
 	rfc2231.h rfc822.h rfc3676.h sha1.h sort.h mime.types \
-	mutt-lua.h nntp.h ChangeLog.nntp \
+	mutt_lua.h nntp.h ChangeLog.nntp \
 	_regex.h OPS.MIX README.SECURITY remailer.c remailer.h browser.h \
 	mbyte.h lib.h extlib.c pgpewrap.c smime_keys.pl pgplib.h \
 	README.SSL README.md README.neomutt README.notmuch smime.h group.h \

configure.ac

@@ -302,10 +302,10 @@ AX_LUA_HEADERS(:,enable_lua=no)
 AX_LUA_LIBS(:,enable_lua=no)
 
 AS_IF([test x$enable_lua = "xyes"], [
-	   AC_DEFINE(USE_LUA, 1, [Define if you want support for LUA.])
-	   MUTT_LIB_OBJECTS="$MUTT_LIB_OBJECTS mutt-lua.o"
-	   CPPFLAGS="$CPPFLAGS $LUA_INCLUDE"
-	   LIBS="$LIBS $LUA_LIB"
+	AC_DEFINE(USE_LUA, 1, [Define if you want support for LUA.])
+	MUTT_LIB_OBJECTS="$MUTT_LIB_OBJECTS mutt_lua.o"
+	CPPFLAGS="$CPPFLAGS $LUA_INCLUDE"
+	LIBS="$LIBS $LUA_LIB"
 ])
 AM_CONDITIONAL(BUILD_LUA, test x$enable_lua = xyes)
 

curs_main.c

@@ -52,9 +52,6 @@
 #include "nntp.h"
 #endif
 
-#ifdef USE_LUA
-#include "mutt-lua.h"
-#endif
 
 #include <ctype.h>
 #include <stdlib.h>
@@ -3213,11 +3210,6 @@ int mutt_index_menu (void)
       case OP_SIDEBAR_TOGGLE_VIRTUAL:
 	mutt_sb_toggle_virtual();
 	break;
-#endif
-#ifdef USE_LUA
-      case OP_LUA_RUN:
-	lua_test();
-	break;
 #endif
       default:
 	if (menu->menu == MENU_MAIN)

functions.h

@@ -129,9 +129,6 @@ const struct binding_t OpMain[] = { /* map: index */
   { "limit-current-thread",      OP_LIMIT_CURRENT_THREAD,           NULL },
   { "link-threads",              OP_MAIN_LINK_THREADS,              "&" },
   { "list-reply",                OP_LIST_REPLY,                     "L" },
-#ifdef USE_LUA
-  { "lua-run",              			OP_LUA_RUN,                 			NULL },
-#endif
   { "mail",                      OP_MAIL,                           "m" },
   { "toggle-new",                OP_TOGGLE_NEW,                     "N" },
   { "toggle-write",              OP_TOGGLE_WRITE,                   "%" },

globals.h

@@ -70,9 +70,6 @@ WHERE char *ImapUser INITVAL (NULL);
 #endif
 WHERE char *Inbox;
 WHERE char *Ispell;
-#ifdef USE_LUA
-WHERE char *LuaScript;
-#endif
 WHERE char *MailcapPath;
 WHERE char *Maildir;
 #if defined(USE_IMAP) || defined(USE_POP) || defined(USE_NNTP)

init.h

@@ -25,6 +25,10 @@
 # include "mx.h"
 #endif
 
+#ifdef USE_LUA
+#include "mutt_lua.h"
+#endif
+
 #include "buffy.h"
 
 #ifndef _MAKEDOC
@@ -1604,13 +1608,6 @@ struct option_t MuttVars[] = {
   ** ``$$keywords_standard'' are \fCfalse\fP, mutt will save keywords
   ** to legacy headers to ensure that it does not lose your labels.
   */
-#ifdef USE_LUA
-  { "lua_script",	DT_STR,  R_NONE, UL &LuaScript, 0 },
-  /*
-  ** .pp
-  ** External Lua script to run.
-  */
-#endif
   { "mail_check",	DT_NUM,  R_NONE, UL &BuffyTimeout, 5 },
   /*
   ** .pp
@@ -4487,6 +4484,10 @@ const struct command_t Commands[] = {
 #endif
   { "ignore",		parse_ignore,		0 },
   { "lists",		parse_lists,		0 },
+#ifdef USE_LUA
+  { "lua",		mutt_lua_parse,		0 },
+  { "lua-source",	mutt_lua_source_file,	0 },
+#endif
   { "macro",		mutt_parse_macro,	0 },
   { "mailboxes",	mutt_parse_mailboxes,	MUTT_MAILBOXES },
   { "unmailboxes",	mutt_parse_mailboxes,	MUTT_UNMAILBOXES },