fix: don't reserve space for trailing divider

CHANGELOG.md

@@ -26,6 +26,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 - A bug where sixel images fail to display when scrolling back and forth is now fixed (#2301).
 - Newline characters are now ignored when drawing the ruler with the `ruler` file configured (#2319).
 - A potential crash when using the `scroll-up`/`scroll-down` commands is now fixed (#2320).
+- A bug where a trailing divider space appears after the last pane with `drawbox` disabled is now fixed (#2332).
 - Case-insensitive command-line completions no longer cause user input to be displayed in lowercase (#2336).
 
 ## [r40](https://github.com/gokcehan/lf/releases/tag/r40)

misc.go

@@ -513,6 +513,29 @@ func readLines(reader io.ByteReader, maxLines int) (lines []string, binary bool,
 	}
 }
 
+func getWidths(wtot int, ratios []int, drawBox bool) []int {
+	rsum := 0
+	for _, r := range ratios {
+		rsum += r
+	}
+
+	wlen := len(ratios)
+	widths := make([]int, wlen)
+
+	if drawBox {
+		wtot -= (wlen + 1)
+	}
+
+	wsum := 0
+	for i := range wlen - 1 {
+		widths[i] = ratios[i] * wtot / rsum
+		wsum += widths[i]
+	}
+	widths[wlen-1] = wtot - wsum
+
+	return widths
+}
+
 // We don't need no generic code
 // We don't need no type control
 // No dark templates in compiler

ui.go

@@ -598,33 +598,10 @@ func getCustomWidth(dir *dir, beg, end int) int {
 	return maxw
 }
 
-func getWidths(wtot int) []int {
-	rsum := 0
-	for _, r := range gOpts.ratios {
-		rsum += r
-	}
-
-	wlen := len(gOpts.ratios)
-	widths := make([]int, wlen)
-
-	if gOpts.drawbox {
-		wtot -= (wlen + 1)
-	}
-
-	wsum := 0
-	for i := range wlen - 1 {
-		widths[i] = gOpts.ratios[i] * wtot / rsum
-		wsum += widths[i]
-	}
-	widths[wlen-1] = wtot - wsum
-
-	return widths
-}
-
 func getWins(screen tcell.Screen) []*win {
 	wtot, htot := screen.Size()
 
-	widths := getWidths(wtot)
+	widths := getWidths(wtot, gOpts.ratios, gOpts.drawbox)
 
 	wacc := 0
 	wlen := len(widths)