Tag names with period broken

[joneskoo]

I have a tag called "yx.fi" which worked fine in v0.17 but is broken in current version (v0.19). I don't use translations on my site.

In v0.17 (expected behavior), my tag "yx.fi" creates the following output:

public
├── 1
│   └── index.html
├── index.html
├── index.xml
├── sitemap.xml
└── tags
    └── yx.fi
        ├── index.html
        └── index.xml

In v0.19 (bad) the following broken structure is generated.

public
├── 1
│   └── index.html
├── index.html
├── index.xml
├── sitemap.xml
└── tags
    ├── yx
    │   └── index.fi
    └── yx.fi
        └── index.xml

I did a git bisect and found that this is the commit that first introduced the problem:

ec2d502b4f214b9505dcd57713d2236c606985e8 is the first bad commit
commit ec2d502b4f214b9505dcd57713d2236c606985e8
Author: Bjørn Erik Pedersen <[email protected]>
Date:   Mon Nov 7 20:24:37 2016 +0100

    node to page: Handle translations
    
    Updates #2297

:040000 040000 457d7aa9578680db9ff03ebbef763f386bbc26c8 c92bbe601bcc8d245791cd44ec890429ef8fdbf1 M	hugolib
bisect run success

So this was first broken after v0.17 but before v0.18, introduced as part of #2297 in commit ec2d502.

[joneskoo]

Here's the reproduction site I used, if it's needed. To reproduce, I believe just creating a tag called 'yx.fi' is sufficient. repro.zip

[bep]

This is fixed.

[github-actions]

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