Bug: Some characters width does not match that of the selected font

[ronisbr]

Before You Begin

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• [X] I have checked for similar issues in the project's issue tracker.
• [X] I have searched closed issues to see if a similar problem was reported before.

Issue Details

First of all, thanks for this amazing software!

When I am trying to render some unicode characters, the width does not match that of the selected unicode font, leading to some strange misalignments.

Description

The issue can be reproduced using this table generated by PrettyTables.jl (Julia language):

┌───────────┬──────────┬────────────┬────────────
│    Col. 1 │   Col. 2 │     Col. 3 │      Col. ⋯
├───────────┼──────────┼────────────┼────────────
│  0.462689 │ 0.842059 │   0.559298 │    0.5792 ⋯
│  0.672944 │ 0.847467 │   0.301494 │    0.4264 ⋯
│  0.804947 │ 0.976035 │   0.785697 │     0.299 ⋯
│   0.56947 │ 0.210278 │ 0.00188285 │    0.1368 ⋯
│  0.191907 │ 0.932318 │   0.188641 │    0.4420 ⋯
│   0.29217 │ 0.441051 │   0.605416 │    0.8476 ⋯
│  0.619284 │ 0.897374 │  0.0310117 │    0.7502 ⋯
│     ⋮     │    ⋮     │     ⋮      │      ⋮    ⋱
└───────────┴──────────┴────────────┴────────────
                   97 columns and 93 rows omitted

I am rendering it using the following command:

ansitoimg tmp.txt output.svg

Expected Behavior

The rendered output should look like this one:

Actual Behavior

We obtain the following output:

Notice how the last columns that has the character ⋮ looks misaligned because it is not being rendered with the correct width.

I can reproduce this behavior with all plugins.

System Information

Please provide the following additional information about your system or environment:

• Operating System (OS): macOS
• OS Version: 14.5
• Browser (if applicable): N/A
• Browser Version (if applicable): N/A
• Project Version (if applicable): ?