Added textadept.reset() function for resetting the Lua state.

The l_init function takes an additional reinit boolean as a result.

When resetting, the package.loaded and _G tables are cleared. Since the
textadept.buffers, textadept.views, and arg tables were originally in _G, they
were moved to the LUA_REGISTRYINDEX table so as not to be lost. They are still
available in _G, but as links to the tables in LUA_REGISTRYINDEX.

textadept.reset() sets a global RESETTING boolean to true when init.lua is
re-run so things like reloading a session or reloading files from the command
line do not occur. The boolean is set to nil afterwards.

1 files changed, 16 insertions, 14 deletions

diff --git a/init.lua b/init.lua
index 44f7b13f..1a380f55 100644
--- a/init.lua
+++ b/init.lua
@@ -14,20 +14,22 @@ require 'textadept'
 
 require 'ext/key_commands'
 
--- process command line arguments
-local textadept = textadept
-if #arg == 0 then
-  textadept.io.load_session()
-else
-  local base_dir = arg[0]:match('^.+/') or ''
-  local filepath
-  for _, filename in ipairs(arg) do
-    if not filename:match('^~?/') then
-      textadept.io.open(base_dir..filename)
-    else
-      textadept.io.open(filename)
+if not RESETTING then
+  -- process command line arguments
+  local textadept = textadept
+  if #arg == 0 then
+    textadept.io.load_session()
+  else
+    local base_dir = arg[0]:match('^.+/') or ''
+    local filepath
+    for _, filename in ipairs(arg) do
+      if not filename:match('^~?/') then
+        textadept.io.open(base_dir..filename)
+      else
+        textadept.io.open(filename)
+      end
     end
+    textadept.pm.entry_text = 'buffers'
+    textadept.pm.activate()
   end
-  textadept.pm.entry_text = 'buffers'
-  textadept.pm.activate()
 end