logic error

[Sokolovskyyy]

Describe the bug
When a plugin performs case-insensitive str.replace or re.sub(..., flags=re.IGNORECASE) for a single ASCII or Cyrillic letter, the resulting text receives double the expected replacements, i.e. one “r/р” becomes “RRRR” instead of “RR”.

To Reproduce
Steps to reproduce the behavior:
0. write your vibe-pligin

1. Install plugin
2. Enable the plugin
3. Send any message containing the letter
4. Observe the sent text: every single letter is replaced by four letters. (letter depends on the content of the code, explanation below)

from base_plugin import BasePlugin, HookResult, HookStrategy

__id__ = "bug_demo"
__name__ = "Bug Demo"
__version__ = "1.0"

class Plugin(BasePlugin):
    def on_plugin_load(self):
        self.add_on_send_message_hook(100)

    def on_send_message_hook(self, account, params):
        if params.message:
            # This single line reproduces the bug
            params.message = params.message.replace('a', 'aa').replace('b', 'bb') \
            return HookResult(strategy=HookStrategy.MODIFY, params=params)
        return HookResult()

Expected behavior
A clear and concise description of what you expected to happen.
expected:
apple -> aaple, broke -> bbroke:
real:
apple -> aaaaple, broke -> bbbbroke

Screenshots
If applicable, add screenshots to help explain your problem.
no need

Smartphone (please complete the following information):
OnePlus 7 crdroid 11.6 Android 15

Additional context
Add any other context about the problem here.
The issue occurs only when the built-in Python runtime (Chaquopy) is used.
Work-around: avoid chained str.replace / re.sub with IGNORECASE ; instead use a single case-sensitive replace for each case. This suggests the runtime internally applies the replacement twice under case-insensitive conditions.

[Sokolovskyyy]

important note: works when replacing upper and lower case letters like this one

from base_plugin import BasePlugin, HookResult, HookStrategy

__id__ = "bug_demo"
__name__ = "Bug Demo"
__version__ = "1.0"

class Plugin(BasePlugin):
    def on_plugin_load(self):
        self.add_on_send_message_hook(100)

    def on_send_message_hook(self, account, params):
        if params.message:
            # This single line reproduces the bug
            params.message = params.message.replace('a', 'aa').replace('b', 'bb') \
                                           .replace('A', 'aa').replace('B', 'bb')
            return HookResult(strategy=HookStrategy.MODIFY, params=params)
        return HookResult()

[immat0x1]

@Sokolovskyyy I recommend you to report this issue to the Chaquopy developers. (idk, maybe it’s fixed in 16.0.1 version, we’re using 15.0.1 due to minSdk 21 in our app)