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Fix PDF build by removing incompatible emoji characters #2152

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Fix PDF build by removing incompatible emoji characters #2152

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6b2b2b0
Fix PDF build by removing incompatible emoji characters
nehasanoor2006-collab Oct 5, 2026
a34c2fe
Restore source emojis and strip them only for LaTeX output
nehasanoor2006-collab Oct 7, 2026
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18 changes: 18 additions & 0 deletions pug_sphinx_extensions/__init__.py
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Original file line number Diff line number Diff line change
@@ -1,9 +1,12 @@
import os
import pathlib
import re
import urllib

from docutils import nodes
import sphinx.application
import sphinx.util.logging
from sphinx.transforms.post_transforms import SphinxPostTransform


DOMAIN = "packaging.python.org"
Expand All @@ -12,6 +15,20 @@
logger = sphinx.util.logging.getLogger(__name__)


_LATEX_EMOJI_RE = re.compile(r"[ \t]*[😊✨🌟🍰🚀🐍📦](?:[ \t]+[😊✨🌟🍰🚀🐍📦])*")


class LatexEmojiTransform(SphinxPostTransform):
default_priority = 500
formats = ("latex",)

def run(self, **kwargs: object) -> None:
for text_node in self.document.findall(nodes.Text):
sanitized = _LATEX_EMOJI_RE.sub("", text_node.astext())
if sanitized != text_node.astext():
text_node.parent.replace(text_node, nodes.Text(sanitized))


def resolve_local_html_link(app: sphinx.application.Sphinx, url_path: str) -> str:
"""Takes path of a link pointing an HTML render of the current project,
and returns local path of the referenced document.
Expand Down Expand Up @@ -79,6 +96,7 @@ def rewrite_local_uri(app: sphinx.application.Sphinx, uri: str) -> str:

def setup(app: sphinx.application.Sphinx) -> dict[str, bool]:
app.connect("linkcheck-process-uri", rewrite_local_uri)
app.add_post_transform(LatexEmojiTransform)

return {
"parallel_read_safe": True,
Expand Down