From 3159a91f20d44f739c7f20f6602f10fb2e6cd8e1 Mon Sep 17 00:00:00 2001
From: garret <garret@airmail.cc>
Date: Sun, 29 Jan 2023 23:45:41 +0000
Subject: dupe and comment: don't do sel/act stuff if only one line

---
 macros/garret.dupe-and-comment.lua | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

(limited to 'macros')

diff --git a/macros/garret.dupe-and-comment.lua b/macros/garret.dupe-and-comment.lua
index 4b3c2d6..198a905 100644
--- a/macros/garret.dupe-and-comment.lua
+++ b/macros/garret.dupe-and-comment.lua
@@ -19,13 +19,14 @@ local function comment(subs, sel, act)
         line.comment = true -- comment out the new dupe line
         subs.insert(sel[i]+1, line) -- and put it below
 
-        -- sort out sel/act
-        local preceding_lines = i - 1
-        local on_act = act == sel[i]
-
-        sel[i] = sel[i] + preceding_lines
-        if on_act then act = sel[i] end
+--        if #sel > 1 then
+            -- sort out sel/act
+            local preceding_lines = i - 1
+            local on_act = act == sel[i]
 
+            sel[i] = sel[i] + preceding_lines
+            if on_act then act = sel[i] end
+--        end
     end
     aegisub.set_undo_point(script_name)
     return sel, act
@@ -42,12 +43,14 @@ local function undo(subs, sel, act)
                 subs[sel[i]+1] = original
                 subs.delete(sel[i])
 
+                if #sel > 1 then
                 -- sort out selection. same as `do`, but the other way round.
                 local preceding_lines = i + 1
                 local on_act = act == sel[i]
 
-                sel[i] = sel[i] - following_lines
+                sel[i] = sel[i] - preceding_lines
                 if on_act then act = sel[i] end
+                end
 
             end
         end
-- 
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