PyQt6 Not toggling "bold" text.

[Ovid]

Hi all,

Google and ChatGPT and Copilot have failed me!

I'm writing a custom word processor as a hobby project. I'm using Python
and PyQt6.

I wrote the following. The intent is that if I select some text and apply
Bold formatting (for example, by hitting "ctrl-b"), it will toggle the
formatting. Specifically, it should remove the bold formatting if all of
the selected text is bold. Otherwise, it will apply the bold formatting.

    class OvidFont:
        def __init__(self, ovid) -> None:
            self.textEditor = ovid.textEditor

        def setBoldText(self) -> None:
            fmt = QTextCharFormat()
            if self.textEditor.currentCharFormat().fontWeight() !=
QFont.Weight.Bold:
                print("    setting bold")   # for debugging
                fmt.setFontWeight(QFont.Weight.Bold)
            else:
                print("    setting normal") # for debugging
                fmt.setFontWeight(QFont.Weight.Normal)
            self.textEditor.textCursor().mergeCharFormat(fmt)

However, it won't remove the bold formatting.

For example, in the sentence "this is a test", if I select "is a" and hit
ctrl-b, I get "this **is a** test", with the "is a" properly bold. However,
with the selection in place, it still remains bold if I hit "ctrl-b". If I
deselect either the first or last character, the toggling of bold works as
expected. (I've tried reversing the if/else logic, but that fails, too).

What am I missing?

Cheers,
Ovid
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