Added function to check if a localized message exists; core/locale.lua

1 files changed, 8 insertions, 4 deletions

diff --git a/core/locale.lua b/core/locale.lua
index 1763f396..8c838ecc 100644
--- a/core/locale.lua
+++ b/core/locale.lua
@@ -5,11 +5,15 @@ local M = {}
 --[[ This comment is for LuaDoc.
 ---
 -- Table of all messages used by Textadept for localization.
--- @field _NIL (string)
---   String returned when no localization for a given message exists.
 module('_L')]]
 
-M._NIL = 'No Localization'
+local none = 'No Localization: '
+
+---
+-- Returns whether or not a localized message exists for the given message.
+-- @param message The message to localize.
+-- @return `true` if a localization exists, `false` otherwise.
+function M._EXISTS(message) return M[message] ~= none..message end
 
 local f = io.open(_USERHOME..'/locale.conf', 'rb')
 if not f then f = io.open(_HOME..'/core/locale.conf', 'rb') end
@@ -22,4 +26,4 @@ for line in f:lines() do
 end
 f:close()
 
-return setmetatable(M, { __index = function(t, k) return M._NIL..': '..k end })
+return setmetatable(M, { __index = function(t, k) return none..k end })