Number Formats ignore literal strings and characters

[redfire75369]

If a number format like "0\ 0" is provided, the space in the middle is ignored.

Code:

let mut wb = new_file();
let sheet = wb.get_sheet_mut(&0).unwrap();
sheet.get_cell_mut("A1").set_value("12");
sheet.get_style_mut("A1")
        .get_number_format_mut()
        .set_format_code("#\\ #");
println!("{:#?}", sheet.get_formatted_value("A1"));

Expected Output: "1 2" Actual Output: "12"

I believe the problematic code is here: https://github.com/MathNya/umya-spreadsheet/blob/f53f841b60266f49551b2b9bdd6b279ea363c3a9/src/helper/number_format.rs#L444-L454

[MathNya]

@Redfire75369 Thank you for contacting us. We will review the situation and correct it.

[MathNya]

@Redfire75369 Sorry, the process here is quite complex and will take time to correct.