Rule idea: unncessary-compiled-regular-expression

[sbrugman]

The discussion in #14680 inspired a related pattern that's less tricky to detect.

re.compile(PATTERN).match(...)

re.compile(PATTERN, FLAGS).sub(...)

can be simplified to

re.match(PATTERN, ...)

re.sub(PATTERN, ..., FLAGS)

For the re functions split, match, finditer, search, subn, sub, fullmatch, the syntax is equivalent (see https://github.com/python/cpython/blob/3.13/Lib/re/__init__.py). The rule is purely stylistic. As a nice bonus, if PATTERN is a literal non-meta-character pattern it will be picked up by RUF055 after the fix.

Examples:

• https://github.com/LLMServe/DistServe/blob/main/distserve/downloader/converter.py#L145
• https://github.com/botbahlul/PyAutoSRT/blob/main/linux/streamlink/plugins/pluzz.py#L40
• https://github.com/OpenIndiana/openindiana-welcome/blob/master/src/openindiana-about.py#L77
• https://github.com/F33RNI/GPT-Telegramus/blob/main/bot_sender.py#L605
• https://github.com/bigsk05/YuanArithmetic/blob/main/篡改答案/one_sec.py#L43
• https://github.com/carolcoral/jxxghp-nas-tools/blob/master/app/utils/episode_format.py#L14
• https://github.com/ElNiak/BountyDork/blob/main/bounty_dork/vpn_proxies/nordvpn_switcher/nordvpn_switch.py#L441
• https://github.com/Hack42/hackbank/blob/master/plugins/stickers.py#L43C12-L43C22