A table with no outside border, but internal borders, does not render correctly

[SVendittelli]

Describe the bug When rendering a table with no outside borders (i.e. top, bottom, left, and right are disabled) and internal borders enabled (i.e. row and column are enabled), the borders do not align correctly. Extra characters are rendered for the horizontal borders.

Setup Please complete the following information along with version numbers, if applicable.

• OS: Windows 11
• Shell: PowerShell 7.4.4, git bash
• Terminal Emulator: Alacritty, Windows Terminal, Git Bash
• Terminal Multiplexer: N/A
• Locale: en_GB.UTF-8

To Reproduce Steps to reproduce the behavior:

1. Create a new go module (mkdir table && cd table && go mod init table)
2. Create a main.go with the contents below
3. Run go get . to pull dependencies
4. Run go run .
5. Observe incorrect rendering:

1│2│3
├─┼─┼─┤
4│5│6
├─┼─┼─┤
7│8│9

Source Code main.go

package main

import (
    "fmt"

    "github.com/charmbracelet/lipgloss"
    "github.com/charmbracelet/lipgloss/table"
)

func main() {

    board := [][]string{
        {"1", "2", "3"},
        {"4", "5", "6"},
        {"7", "8", "9"},
    }

    t := table.New().
        Border(lipgloss.NormalBorder()).
        BorderRow(true).
        BorderColumn(true).
        BorderTop(false).
        BorderBottom(false).
        BorderLeft(false).
        BorderRight(false).
        Rows(board...)

    fmt.Println(t.Render())
}

Expected behavior The additional characters (├ and ┤) would not be rendered, resulting in:

1│2│3
─┼─┼─
4│5│6
─┼─┼─
7│8│9

Screenshots

Additional context This is inconsistent with the type of border, I have included a list of them all below:

BlockBorder:

1█2█3
███
4█5█6
███
7█8█9

DoubleBorder:

1║2║3
╠═╬═╬═╣
4║5║6
╠═╬═╬═╣
7║8║9

HiddenBorder:

1 2 3

4 5 6

7 8 9

InnerHalfBlockBorder:

1▐2▐3
▀▀▀
4▐5▐6
▀▀▀
7▐8▐9

NormalBorder:

1│2│3
├─┼─┼─┤
4│5│6
├─┼─┼─┤
7│8│9

OuterHalfBlockBorder:

1▌2▌3
▄▄▄
4▌5▌6
▄▄▄
7▌8▌9

RoundedBorder:

1│2│3
├─┼─┼─┤
4│5│6
├─┼─┼─┤
7│8│9

ThickBorder:

1┃2┃3
┣━╋━╋━┫
4┃5┃6
┣━╋━╋━┫
7┃8┃9