Only allow a word to start with a-z in pret-lam.

This prevents seeing a λ or other non a-z (but letter characters according
to the %a character class) as the start of a word.

diff --git a/pret-lam.lua b/pret-lam.lua
index c05f987bd71747b26b23c7a31b8775e4d8db1974..cf50e87408e1d880d98b2c506a4207879431b2ad 100644 (file)
--- a/pret-lam.lua
+++ b/pret-lam.lua
@@ -62,7 +62,9 @@ end
 -- Take a single word from str, if posible. Returns the rest of the string and
 -- the word taken.
 function buffers.visualizers.lam.take_word(str)
-        res, newstr = utf.match(str, "^(%a[%a%d_]+)(.*)")
+        -- A word must always start with a-z (in particular, λ is not a valid
+        -- start of a word).
+        res, newstr = utf.match(str, "^([a-z][%a%d_]+)(.*)")
         return res, newstr or str
 end