apply_corrections.py 1.4: fixing bug #359 using regex module

[lei-json]

Script info

• Script name:  apply_corrections.py
• Version:  1.4

• Requirements:  regex (Python module)

• Min WeeChat version: 

• Script tags: 

Description

Replace usage of the standard re module with the regex module in
get_corrected_messages to prevent CPU hangs caused by catastrophic backtracking when processing complex or malicious patterns.

Checklist (new script)

• Single commit, single file added
• Commit message: New script name.py: short description…
• No similar script already exists
• Name: max 32 chars, only lower case letters, digits and underscores
• Unique name, does not already exist in repository
• No shebang on the first line
• Comment in script with name/pseudo, e-mail and license using SPDX tags (see Contributing guide)
• Only English in code/comments
• Pure WeeChat API used, no extra API
• Function hook_url, hook_process or hook_process_hashtable is used for any blocking call
• For Python script: works with Python 3 (Python 2 support is optional)
• Score 100 / 100 displayed by weechat-script-lint

Checklist (script update)

• Author has been contacted
• Single commit, single file added
• Commit message format: script_name.py X.Y: …
• Script version and Changelog have been updated
• For Python script: works with Python 3 (Python 2 support is optional)
• Score 100 / 100 displayed by weechat-script-lint

Checklist (script deletion)

• Author has been contacted
• Single commit, single file deleted
• Commit message format: Remove script name.py with reasons in description