Fix HunyuanVideo 1.5 modular glyph regex for curly quotes

[Ricardo-M-L]

What does this PR do?

extract_glyph_texts in the HunyuanVideo 1.5 modular pipeline had a copy-paste typo in its regex:

# src/diffusers/modular_pipelines/hunyuan_video1_5/encoders.pypattern=r"\"(.*?)\"|\"(.*?)\""

Both alternatives match ASCII double quotes. The second branch is redundant, and any text quoted with Chinese / smart curly quotes (“…”) is silently dropped — no glyph extraction happens, so the model never receives the formatted Text "..." instruction.

The canonical, non-modular pipeline has the intended pattern (https://github.com/huggingface/diffusers/blob/main/src/diffusers/pipelines/hunyuan_video1_5/pipeline_hunyuan_video1_5.py#L93):

pattern=r"\"(.*?)\"|“(.*?)”"

HunyuanVideo 1.5 is a bilingual Tencent model, so Chinese prompts that use “…” to mark on-screen text are a realistic and documented input shape. Under the modular path they currently skip glyph extraction entirely and produce mis-rendered poster/caption text.

Reproduction

importrebuggy=r"\"(.*?)\"|\"(.*?)\""# modular path todayfixed=r"\"(.*?)\"|“(.*?)”"# non-modular path / this fixprompt='A poster with “你好”'print(re.findall(buggy, prompt)) # -> [] (silently ignored)print(re.findall(fixed, prompt)) # -> [('', '你好')]

Fix

Align the modular pipeline's pattern with the existing, correct non-modular pattern. One-character change.

Before submitting

• This PR fixes a typo or improves the docs.
• Did you read the contributor guideline?
• Did you make sure to update the documentation with your changes? (N/A — internal helper, no doc references)
• Did you write any new necessary tests? (N/A — trivially verifiable regex constant)

Who can review?

@DN6@yiyixuxu

[Ricardo-M-L]

Polite bump — the original `extract_glyph_texts` regex `r"\"(.?)\"|\"(.?)\""` has two identical alternatives (both match straight `"`), so the second branch is dead code and curly-quoted glyphs (`"…"`) never match. The fix changes the second branch to `"(.*?)"` so the function picks up smart-quoted glyphs as documented.

cc @yiyixuxu — modular pipelines area. CI is green, sitting since 2026-04-21. 🙏

[Ricardo-M-L]

@yiyixuxu friendly bump 🙏 — 14 days since I opened this and no review yet. One-line regex fix: the original pattern r'"(.*?)"|"(.*?)"' has two identical alternatives because both straight quotes were the same byte, so the curly-quote branch ("") never fires and quoted glyph spans get missed in HunyuanVideo 1.5. Happy to rebase if needed.

[Ricardo-M-L]

Hi team, just following up on this PR. Happy to make any changes or address feedback if needed. Thanks for considering it!

[Ricardo-M-L]

Hi! Just a friendly ping on this PR. It's been open for a while — would appreciate a review when you get a chance. Thanks for your time!

[Ricardo-M-L]

Friendly ping - this PR has been open for a while. Would appreciate a review when you get a chance. Thanks!

[yiyixuxu]

hi @Ricardo-M-L

I'm closing this per the AI-assisted contribution guidelines: https://huggingface.co/docs/diffusers/main/en/conceptual/contribution#ai-assisted-and-agentic-contributions

We're seeing an increasing volume of contributions and review capacity is currently our bottleneck, so the guidelines ask for maintainer acknowledgment on an issue before a PR is opened — that's what lets us prioritize the bugs users are actually hitting.

Normally we'd leave this as a suggestion and keep working with a contributor on the PR, but the volume here has made that impractical — these have come in faster than we can review them, so I'm closing all of them that's opened bu you rather than reviewing them individually.