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fix(remix): Strip trailing underscore from route segments - #24123

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remix-trailing-underscore
Sep 8, 2026
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fix(remix): Strip trailing underscore from route segments#24123
chargome merged 1 commit into
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remix-trailing-underscore

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@chargome chargome commented Sep 7, 2026

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A trailing underscore opts a Remix v2 route segment out of layout nesting without appearing in the URL, so routes/concerts_.mine was named /concerts_/mine — with source route, matching no real URL.

Fixed in both converters (runtime naming and the build-time manifest). The strip runs after the pathless-layout check and before the dynamic-segment handling, mirroring Remix's createRoutePath: _auth_.login stays a skipped layout, and $id_ resolves to :id.

Fixes #24119

@chargome chargome self-assigned this Sep 7, 2026
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chargome commented Sep 7, 2026

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✅ Bugbot reviewed your changes and found no new issues!

Comment @cursor review or bugbot run to trigger another review on this PR

Reviewed by Cursor Bugbot for commit a25f13b. Configure here.

A trailing underscore in a Remix v2 flat route segment opts that segment out
of layout nesting without appearing in the URL. Neither route-to-path converter
handled it, so `routes/concerts_.mine` was named `/concerts_/mine` with source
`route` - a high-confidence parameterized name matching no real URL.

Strip one trailing underscore after the pathless-layout check and before the
dynamic-segment handling, mirroring Remix's own createRoutePath. The ordering
keeps `_auth_.login` a skipped layout and makes `$id_` resolve to `:id`.

Fixes #24119
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
@chargome
chargome force-pushed the remix-trailing-underscore branch from a25f13b to 9ae4652 Compare September 7, 2026 07:57
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size-limit report 📦

⚠️ Warning: Base artifact is not the latest one, because the latest workflow run is not done yet. This may lead to incorrect results. Try to re-run all tests to get up to date results.

Path Size % Change Change
@sentry/browser 28.7 kB - -
@sentry/browser - with treeshaking flags 27.01 kB - -
@sentry/browser - with treeshaking flags tracing without tracing 26.9 kB - -
@sentry/browser (incl. Tracing) 49.08 kB - -
@sentry/browser (incl. Tracing + Span Streaming) 49.08 kB - -
@sentry/browser (incl. Tracing, Profiling) 52 kB - -
@sentry/browser (incl. Tracing, Replay) 88.63 kB - -
@sentry/browser (incl. Tracing, Replay) - with treeshaking flags 77.86 kB - -
@sentry/browser (incl. Tracing, Replay with Canvas) 93.31 kB - -
@sentry/browser (incl. Tracing, Replay, Feedback) 106.26 kB - -
@sentry/browser (incl. Feedback) 46.19 kB - -
@sentry/browser (incl. sendFeedback) 33.76 kB - -
@sentry/browser (incl. FeedbackAsync) 38.86 kB - -
@sentry/browser (incl. Metrics) 29.67 kB - -
@sentry/browser (incl. Logs) 29.95 kB - -
@sentry/browser (incl. Metrics & Logs) 30.6 kB - -
@sentry/react 30.46 kB - -
@sentry/react (incl. Tracing) 51.29 kB - -
@sentry/vue 35.93 kB - -
@sentry/vue (incl. Tracing) 51.35 kB - -
@sentry/svelte 28.72 kB - -
CDN Bundle 30.44 kB - -
CDN Bundle (incl. Tracing) 49.61 kB - -
CDN Bundle (incl. Logs, Metrics) 32.67 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) 51.54 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) 73.33 kB - -
CDN Bundle (incl. Tracing, Replay) 87.17 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) 89.03 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) 93.1 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) 95.04 kB - -
CDN Bundle - uncompressed 90.17 kB - -
CDN Bundle (incl. Tracing) - uncompressed 147.84 kB - -
CDN Bundle (incl. Logs, Metrics) - uncompressed 96.55 kB - -
CDN Bundle (incl. Tracing, Logs, Metrics) - uncompressed 153.62 kB - -
CDN Bundle (incl. Replay, Logs, Metrics) - uncompressed 225.86 kB - -
CDN Bundle (incl. Tracing, Replay) - uncompressed 267.48 kB - -
CDN Bundle (incl. Tracing, Replay, Logs, Metrics) - uncompressed 273.25 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed 281.18 kB - -
CDN Bundle (incl. Tracing, Replay, Feedback, Logs, Metrics) - uncompressed 286.94 kB - -
@sentry/nextjs (client) 53.9 kB - -
@sentry/sveltekit (client) 49.52 kB - -
@sentry/core/server 38.49 kB -6.05% -2.48 kB 🔽
@sentry/core/browser 13.53 kB - -
@sentry/node 124.81 kB +0.02% +17 B 🔺
@sentry/node/import (ESM hook with diagnostics-channel injection) 81.51 kB - -
@sentry/node - without tracing 88.51 kB +0.03% +22 B 🔺
@sentry/node - without channel injection 104.12 kB +0.02% +18 B 🔺
@sentry/aws-serverless 96.88 kB +0.02% +17 B 🔺
@sentry/cloudflare (withSentry) - minified 201.59 kB - -
@sentry/cloudflare (withSentry) 501.44 kB +0.01% +8 B 🔺

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@chargome
chargome marked this pull request as ready for review September 7, 2026 08:07
@chargome
chargome requested a review from a team as a code owner September 7, 2026 08:07
@chargome
chargome requested review from nicohrubec and s1gr1d and removed request for a team September 7, 2026 08:07
Comment thread packages/remix/src/config/createRemixRouteManifest.ts
@chargome
chargome merged commit 05e9fce into develop Sep 8, 2026
49 checks passed
@chargome
chargome deleted the remix-trailing-underscore branch September 8, 2026 13:39
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remix: Trailing-underscore route segments leak into transaction names

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