i18n fallback pages are not generated at build when page filename starts with locale key #14359
Description
Astro Info
Astro v5.13.7
Node v22.15.1
System macOS (arm64)
Package Manager npm
Output static
Adapter none
Integrations none
If this issue only occurs in one browser, which browser is a problem?
No response
Describe the Bug
When using Astro i18n fallbacks with fallbackType: 'rewrite', builds do not generate fallback files for pages whose filenames begin with a locale key (e.g., svalbard.astro, denmark.astro, etc.).
(This only affects astro build, astro dev works as expected.)
Config:
// @ts-check
import { defineConfig } from 'astro/config';
// https://astro.build/config
export default defineConfig({
i18n: {
locales: ['en', 'de', 'sv'],
defaultLocale: 'en',
routing: {
fallbackType: 'rewrite',
},
fallback: {
sv: 'en',
de: 'en',
},
},
});Page structure:
src/
└── pages/
├── denmark.astro
├── index.astro
├── norway.astro
└── svalbard.astro
Output from astro build:
(Notice how astro do not produce fallback files for pages whose name with a locale key (denmark/svalbard), while it works for the rest of the pages (index/norway))
12:37:30 ▶ src/pages/denmark.astro
12:37:30 └─ /denmark/index.html (+20ms)
12:37:30 ▶ src/pages/norway.astro
12:37:30 └─ /norway/index.html (+5ms)
12:37:30 ▶ src/pages/norway.astro
12:37:30 └─ /sv/norway/index.html (+11ms)
12:37:30 ▶ src/pages/norway.astro
12:37:30 └─ /de/norway/index.html (+5ms)
12:37:30 ▶ src/pages/svalbard.astro
12:37:30 └─ /svalbard/index.html (+4ms)
12:37:30 ▶ src/pages/index.astro
12:37:30 └─ /index.html (+6ms)
12:37:30 ▶ src/pages/index.astro
12:37:30 └─ /sv/index.html (+6ms)
12:37:30 ▶ src/pages/index.astro
12:37:30 └─ /de/index.html (+5ms)
You can run astro build in https://stackblitz.com/edit/github-cferehre-wbcz1knm?file=astro.config.mjs to see this exact problem.
What's the expected result?
I expect Astro to generate fallback files for all pages:
12:37:30 ▶ src/pages/denmark.astro
12:37:30 └─ /denmark/index.html (+20ms)
12:37:30 ▶ src/pages/denmark.astro
12:37:30 └─ /sv/denmark/index.html (+11ms)
12:37:30 ▶ src/pages/denmark.astro
12:37:30 └─ /de/denmark/index.html (+5ms)
12:37:30 ▶ src/pages/norway.astro
12:37:30 └─ /norway/index.html (+5ms)
12:37:30 ▶ src/pages/norway.astro
12:37:30 └─ /sv/norway/index.html (+11ms)
12:37:30 ▶ src/pages/norway.astro
12:37:30 └─ /de/norway/index.html (+5ms)
12:37:30 ▶ src/pages/svalbard.astro
12:37:30 └─ /svalbard/index.html (+4ms)
12:37:30 ▶ src/pages/svalbard.astro
12:37:30 └─ /sv/svalbard/index.html (+11ms)
12:37:30 ▶ src/pages/svalbard.astro
12:37:30 └─ /de/svalbard/index.html (+5ms)
12:37:30 ▶ src/pages/index.astro
12:37:30 └─ /index.html (+6ms)
12:37:30 ▶ src/pages/index.astro
12:37:30 └─ /sv/index.html (+6ms)
12:37:30 ▶ src/pages/index.astro
12:37:30 └─ /de/index.html (+5ms)
Link to Minimal Reproducible Example
https://stackblitz.com/edit/github-cferehre-wbcz1knm?file=astro.config.mjs
Participation
- I am willing to submit a pull request for this issue.