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tpl: Add a warnf template func

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Fixes #6628
This commit is contained in:
Bjørn Erik Pedersen
2019-12-20 20:46:17 +01:00
parent 8a58ebb311
commit 1773d71d5b
4 changed files with 45 additions and 7 deletions
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17
docs/content/en/functions/errorf.md
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@@ -1,7 +1,6 @@
---
title: errorf
linktitle: errorf
description: Log ERROR and fail the build from the templates.
title: errorf and warnf
description: Log ERROR or WARNING from the templates.
date: 2017-09-30
publishdate: 2017-09-30
lastmod: 2017-09-30
@@ -18,12 +17,18 @@ deprecated: false
aliases: []
---
`errorf` will evaluate a format string, then output the result to the ERROR log (and only once per error message to avoid flooding the log).
`errorf` or `warnf` will evaluate a format string, then output the result to the ERROR or WARNING log (and only once per error message to avoid flooding the log).
This will also cause the build to fail (the `hugo` command will `exit -1`).
Any ERROR will also cause the build to fail (the `hugo` command will `exit -1`).
Note that the WARNING will only be printed to the console.
```
{{ errorf "Failed to handle page %q" .Path }}
```
Note that `errorf` supports all the formatting verbs of the [fmt](https://golang.org/pkg/fmt/) package.
```
{{ warnf "You should update the shortcodes in %q" .Path }}
```
Note that `errorf` and `warnf` support all the formatting verbs of the [fmt](https://golang.org/pkg/fmt/) package.