Valid indices begin at 1, not 0!

1 files changed, 3 insertions, 3 deletions

diff --git a/telem.lua b/telem.lua
index 704855c..51f312f 100755
--- a/telem.lua
+++ b/telem.lua
@@ -227,7 +227,7 @@ function do_go()
 		print("No such board!  Hit `l` to list boards.")
 	else
 		local index = tonumber(board)
-		if index < 0 or index > #boards then
+		if index < 1 or index > #boards then
 			print("No such board!  Hit `l` to list boards.")
 		else
 			current_board = boards[index]
@@ -478,7 +478,7 @@ function do_type()
 	if not check_at_board() then return end
 	io.write("Read which thread? ")
 	local thread_id = tonumber(io.read())
-	if not thread_id or thread_id < 0 or thread_id > #current_board_threads then
+	if not thread_id or thread_id < 1 or thread_id > #current_board_threads then
 		print("Invalid thread index!")
 		return
 	end
@@ -503,7 +503,7 @@ function do_reply()
 	if not check_at_board() then return end
 	io.write("Reply to which thread? ")
 	local thread_id = tonumber(io.read())
-	if not thread_id or thread_id < 0 or thread_id > #current_board_threads then
+	if not thread_id or thread_id < 1 or thread_id > #current_board_threads then
 		print("Invalid thread index!")
 		return
 	end