Wrong spelling of "Montag" from time.Format

[raoulb]

The german translation of the weekday name "monday" is wrong. The following code

{{ time.Format "Monday" "2021-11-01" }}<br>
{{ time.Format "Monday" "2021-11-02" }}<br>
{{ time.Format "Monday" "2021-11-03" }}<br>
{{ time.Format "Monday" "2021-11-04" }}<br>
{{ time.Format "Monday" "2021-11-05" }}<br>
{{ time.Format "Monday" "2021-11-06" }}<br>
{{ time.Format "Monday" "2021-11-07" }}<br>

produces

Mo.tag
Dienstag
Mittwoch
Donnerstag
Freitag
Samstag
Sonntag

with Mo.tag instead of Montag. The others are correct. Hugo is configured as:

languageCode = "de-de"
defaultContentLanguage = "de"

timeZone = "UTC"

A minimal working example can be found here.

What version of Hugo are you using (hugo version)?

$ hugo version
hugo v0.88.1-5BC54738 linux/amd64 BuildDate=2021-09-04T09:39:19Z VendorInfo=gohugoio

Does this issue reproduce with the latest release?

Yes.

[jmooring]

There's a problem with month names as well.

{{ time.Format "January" "2021-01-01" }} --> Jan.uar
{{ time.Format "January" "2021-02-01" }} --> Feb.ruar
{{ time.Format "January" "2021-03-01" }} --> März
{{ time.Format "January" "2021-04-01" }} --> Apr.il
{{ time.Format "January" "2021-05-01" }} --> Mai
{{ time.Format "January" "2021-06-01" }} --> Junii
{{ time.Format "January" "2021-07-01" }} --> Julii
{{ time.Format "January" "2021-08-01" }} --> Aug.ust
{{ time.Format "January" "2021-09-01" }} --> Sept.tember
{{ time.Format "January" "2021-10-01" }} --> Oktober
{{ time.Format "January" "2021-11-01" }} --> Nov.ember
{{ time.Format "January" "2021-12-01" }} --> Dezember

[jmooring]

This seems to happen when

1. The day or month name is capitalized in the target language, AND
2. A day or month abbreviation in the target language matches a few characters of the format string

Affected languages include: Afrikaans (af), German (de), Swiss German (gsw), maybe some others

[davidsneighbour]

Double ii on Juni and Juli is wrong too.

[bep]

This looks like a Bangles bug.

[bep]

Note that this is only wrong for the Go layout strings, it is OK for :date_long etc.

[raoulb]

Cool. Thanks for the quick fix!

[github-actions]

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