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https://github.com/hashicorp/terraform/blob/master/lang/functions.go#L126 shows that Terraform's Trimprefix comes directly from the standard go library. When prefix is absent in the go standard library, the original string is returned; https://golang.org/pkg/strings/#TrimPrefix.
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layout, page_title, sidebar_current, description
| layout | page_title | sidebar_current | description |
|---|---|---|---|
| functions | trimprefix - Functions - Configuration Language | docs-funcs-string-trimprefix | The trimprefix function removes the specified prefix from the start of a given string. |
trimprefix Function
-> Note: This page is about Terraform 0.12 and later. For Terraform 0.11 and earlier, see 0.11 Configuration Language: Interpolation Syntax.
trimprefix removes the specified prefix from the start of the given string. If the string does not start with the prefix, the string is returned unchanged.
Examples
> trimprefix("helloworld", "hello")
world
> trimprefix("helloworld", "cat")
helloworld
Related Functions
trimremoves characters at the start and end of a string.trimsuffixremoves a word from the end of a string.trimspaceremoves all types of whitespace from both the start and the end of a string.