From fb64932134afd76f9567584d2282990eb1fd1b39 Mon Sep 17 00:00:00 2001
From: rxi <rxi@users.noreply.github.com>
Date: Tue, 4 Mar 2014 12:18:50 +0000
Subject: [PATCH] Added support for numerical keys to lume.format()

---
 README.md | 7 ++++---
 lume.lua  | 4 +++-
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 3b8c06f..b7f319b 100644
--- a/README.md
+++ b/README.md
@@ -213,10 +213,11 @@ lume.trim("  Hello  ") -- Returns "Hello"
 
 ### lume.format(str [, vars])
 Returns a formatted string. The values of keys in the table `vars` can be
-inserted into the string by using the form `"{key}"` in `str`.
+inserted into the string by using the form `"{key}"` in `str`; numerical keys
+can also be used.
 ```lua
-lume.format("Hello {a}, I hope {a} is {b}.", {a = "world", b = "well"})
--- Returns "Hello world, I hope world is well."
+lume.format("{b} hi {a}", {a = "mark", b = "Oh"}) -- Returns "Oh hi mark"
+lume.format("Hello {1}!", {"world"}) -- Returns "Hello world!"
 ```
 
 ### lume.trace(...)
diff --git a/lume.lua b/lume.lua
index d26ec7b..a8313b9 100644
--- a/lume.lua
+++ b/lume.lua
@@ -232,7 +232,9 @@ end
 
 function lume.format(str, vars)
   if not vars then return str end
-  local f = function(x) return tostring(vars[x] or "{" .. x .. "}") end
+  local f = function(x) 
+    return tostring(vars[x] or vars[tonumber(x)] or "{" .. x .. "}") 
+  end
   return (str:gsub("{(.-)}", f))
 end