fix: stop stripping trailing slashes in yew-router

[Madoshakalaka]

Description

Stop stripping trailing slashes from route patterns and incoming URLs during matching. /path and /path/ are now distinct routes, matching standard URL semantics.

Previously, yew-router called strip_slash_suffix on both registered route patterns and incoming pathnames before matching. This made /settings and /settings/ resolve to the same route variant, but the browser resolves relative paths differently for each form (./img.jpg from /settings resolves to /img.jpg; from /settings/ resolves to /settings/img.jpg). This caused silent breakage for components that use relative asset paths.

With this change:

• Routes defined with #[at("/settings/")] only match URLs with trailing slash
• Routes defined with #[at("/settings")] only match URLs without trailing slash
• Both forms can now be defined in the same enum without panicking (previously they collided after stripping)
• The root route #[at("/")] is unaffected

Fixes #4098

Checklist

• I have reviewed my own code
• I have added tests

[Madoshakalaka]

I have prepared a migration guide and will edit the website at release.

[github-actions]

Visit the preview URL for this PR (updated for commit f03475f):

https://yew-rs--pr4110-fix-trailing-slash-s-5pw49jvc.web.app

_{(expires Sat, 11 Apr 2026 07:59:29 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

[github-actions]

Size Comparison

Details

examples	master (KB)	pull request (KB)	diff (KB)	diff (%)
async_clock	100.818	100.818	0	0.000%
boids	168.450	168.450	0	0.000%
communication_child_to_parent	94.076	94.076	0	0.000%
communication_grandchild_with_grandparent	105.913	105.913	0	0.000%
communication_grandparent_to_grandchild	102.256	102.256	0	0.000%
communication_parent_to_child	91.486	91.486	0	0.000%
contexts	105.977	105.977	0	0.000%
counter	86.798	86.798	0	0.000%
counter_functional	88.834	88.834	0	0.000%
dyn_create_destroy_apps	90.713	90.713	0	0.000%
file_upload	99.812	99.812	0	0.000%
function_delayed_input	94.814	94.814	0	0.000%
function_memory_game	173.667	173.667	0	0.000%
function_router	397.257	397.196	-0.061	-0.015%
function_todomvc	164.956	164.956	0	0.000%
futures	235.551	235.551	0	0.000%
game_of_life	105.099	105.099	0	0.000%
immutable	259.626	259.626	0	0.000%
inner_html	81.341	81.341	0	0.000%
js_callback	109.956	109.956	0	0.000%
keyed_list	180.408	180.408	0	0.000%
mount_point	84.714	84.714	0	0.000%
nested_list	113.657	113.657	0	0.000%
node_refs	92.089	92.089	0	0.000%
password_strength	1719.252	1719.252	0	0.000%
portals	93.558	93.558	0	0.000%
router	367.981	367.924	-0.058	-0.016%
suspense	113.965	113.965	0	0.000%
timer	88.943	88.943	0	0.000%
timer_functional	99.369	99.369	0	0.000%
todomvc	142.661	142.661	0	0.000%
two_apps	86.711	86.711	0	0.000%
web_worker_fib	136.460	136.460	0	0.000%
web_worker_prime	187.644	187.644	0	0.000%
webgl	83.485	83.485	0	0.000%

✅ None of the examples has changed their size significantly.

[github-actions]

Benchmark - SSR

Yew Master

Details

Benchmark	Round	Min (ms)	Max (ms)	Mean (ms)	Standard Deviation
Baseline	10	291.439	293.320	291.869	0.541
Hello World	10	484.627	491.747	488.157	2.285
Function Router	10	31623.231	31994.519	31807.330	115.077
Concurrent Task	10	1006.700	1007.744	1007.305	0.369
Many Providers	10	1106.208	1162.122	1124.871	15.101

Pull Request

Details

Benchmark	Round	Min (ms)	Max (ms)	Mean (ms)	Standard Deviation
Baseline	10	310.949	312.047	311.374	0.342
Hello World	10	474.445	481.914	478.339	3.043
Function Router	10	32982.960	34949.274	33790.126	589.412
Concurrent Task	10	1006.514	1007.993	1007.416	0.441
Many Providers	10	1081.863	1133.918	1103.531	18.391