Merge commit 'e509cac533600cf4fa8382c9cdab78ddd82db688'

28 files changed, 927 insertions, 0 deletions

diff --git a/docs/content/en/functions/strings/Chomp.md b/docs/content/en/functions/strings/Chomp.md
new file mode 100644
index 000000000..22e2b546b
--- /dev/null
+++ b/docs/content/en/functions/strings/Chomp.md
@@ -0,0 +1,31 @@
+---
+title: chomp
+linkTitle: chomp
+description: Removes any trailing newline characters.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [chomp]
+  returnType: any
+  signatures: [strings.Chomp STRING]
+relatedFunctions:
+  - strings.Chomp
+  - strings.Trim
+  - strings.TrimLeft
+  - strings.TrimPrefix
+  - strings.TrimRight
+  - strings.TrimSuffix
+aliases: [/functions/chomp]
+---
+
+If the argument is of type template.HTML, returns template.HTML, else returns a string.
+
+
+Useful in a pipeline to remove newlines added by other processing (e.g., [`markdownify`](/functions/transform/markdownify)).
+
+```go-html-template
+{{ chomp "<p>Blockhead</p>\n" }} → "<p>Blockhead</p>"
+```
diff --git a/docs/content/en/functions/strings/Contains.md b/docs/content/en/functions/strings/Contains.md
new file mode 100644
index 000000000..66a90aeea
--- /dev/null
+++ b/docs/content/en/functions/strings/Contains.md
@@ -0,0 +1,29 @@
+---
+title: strings.Contains
+description: Reports whether the string contains a substring.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: bool
+  signatures: [strings.Contains STRING SUBSTRING]
+relatedFunctions:
+  - strings.Contains
+  - strings.ContainsAny
+  - strings.ContainsNonSpace
+  - strings.HasPrefix
+  - strings.HasSuffix
+aliases: [/functions/strings.contains]
+---
+
+```go-html-template
+{{ strings.Contains "Hugo" "go" }} → true
+```
+The check is case sensitive: 
+
+```go-html-template
+{{ strings.Contains "Hugo" "Go" }} → false
+```
diff --git a/docs/content/en/functions/strings/ContainsAny.md b/docs/content/en/functions/strings/ContainsAny.md
new file mode 100644
index 000000000..4f324358a
--- /dev/null
+++ b/docs/content/en/functions/strings/ContainsAny.md
@@ -0,0 +1,30 @@
+---
+title: strings.ContainsAny
+description: Reports whether a string contains any character from a given string.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: bool
+  signatures: [strings.ContainsAny STRING CHARACTERS]
+relatedFunctions:
+  - strings.Contains
+  - strings.ContainsAny
+  - strings.ContainsNonSpace
+  - strings.HasPrefix
+  - strings.HasSuffix
+aliases: [/functions/strings.containsany]
+---
+
+```go-html-template
+{{ strings.ContainsAny "Hugo" "gm" }} → true
+```
+
+The check is case sensitive: 
+
+```go-html-template
+{{ strings.ContainsAny "Hugo" "Gm" }} → false
+```
diff --git a/docs/content/en/functions/strings/ContainsNonSpace.md b/docs/content/en/functions/strings/ContainsNonSpace.md
new file mode 100644
index 000000000..d2e6114b3
--- /dev/null
+++ b/docs/content/en/functions/strings/ContainsNonSpace.md
@@ -0,0 +1,36 @@
+---
+title: strings.ContainsNonSpace
+description: Reports whether a string contains any non-space characters as defined by Unicode’s White Space property.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: bool
+  signatures: [strings.ContainsNonSpace STRING]
+relatedFunctions:
+  - strings.Contains
+  - strings.ContainsAny
+  - strings.ContainsNonSpace
+  - strings.HasPrefix
+  - strings.HasSuffix
+aliases: [/functions/strings.containsnonspace]
+---
+
+```go-html-template
+{{ strings.ContainsNonSpace "\n" }}     → false
+{{ strings.ContainsNonSpace " " }}      → false
+{{ strings.ContainsNonSpace "\n abc" }} → true
+```
+
+Common white space characters include:
+
+```text
+'\t', '\n', '\v', '\f', '\r', ' '
+```
+
+See the [Unicode Character Database] for a complete list.
+
+[Unicode Character Database]: https://www.unicode.org/Public/UCD/latest/ucd/PropList.txt
diff --git a/docs/content/en/functions/strings/Count.md b/docs/content/en/functions/strings/Count.md
new file mode 100644
index 000000000..25ea58967
--- /dev/null
+++ b/docs/content/en/functions/strings/Count.md
@@ -0,0 +1,29 @@
+---
+title: strings.Count
+description: Returns the number of non-overlapping instances of a substring within a string.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: int
+  signatures: [strings.Count SUBSTR STRING]
+relatedFunctions:
+  - len
+  - strings.Count
+  - strings.CountRunes
+  - strings.CountWords
+  - strings.RuneCount
+aliases: [/functions/strings.count]
+---
+
+If `SUBSTR` is an empty string, this function returns 1 plus the number of Unicode code points in `STRING`.
+
+```go-html-template
+{{ "aaabaab" | strings.Count "a" }} → 5
+{{ "aaabaab" | strings.Count "aa" }} → 2
+{{ "aaabaab" | strings.Count "aaa" }} → 1
+{{ "aaabaab" | strings.Count "" }} → 8
+```
diff --git a/docs/content/en/functions/strings/CountRunes.md b/docs/content/en/functions/strings/CountRunes.md
new file mode 100644
index 000000000..4a17d04ab
--- /dev/null
+++ b/docs/content/en/functions/strings/CountRunes.md
@@ -0,0 +1,29 @@
+---
+title: strings.CountRunes
+linkTitle: countrunes
+description: Returns the number of runes in a string excluding whitespace.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [countrunes]
+  returnType: int
+  signatures: [strings.CountRunes INPUT]
+relatedFunctions:
+  - len
+  - strings.Count
+  - strings.CountRunes
+  - strings.CountWords
+  - strings.RuneCount
+aliases: [/functions/countrunes]
+---
+
+In contrast with the [`strings.RuneCount`] function, which counts every rune in a string, `strings.CountRunes` excludes whitespace.
+
+```go-html-template
+{{ "Hello, 世界" | strings.CountRunes }} → 8
+```
+
+[`strings.RuneCount`]: /functions/strings/runecount
diff --git a/docs/content/en/functions/strings/CountWords.md b/docs/content/en/functions/strings/CountWords.md
new file mode 100644
index 000000000..e6915e6cd
--- /dev/null
+++ b/docs/content/en/functions/strings/CountWords.md
@@ -0,0 +1,31 @@
+---
+title: strings.CountWords
+linkTitle: countwords
+description: Counts the number of words in a string.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [countwords]
+  returnType: int
+  signatures: [strings.CountWords INPUT]
+relatedFunctions:
+  - len
+  - strings.Count
+  - strings.CountRunes
+  - strings.CountWords
+  - strings.RuneCount
+aliases: [/functions/countwords]
+---
+
+The template function works similar to the [.WordCount page variable][pagevars].
+
+```go-html-template
+{{ "Hugo is a static site generator." | countwords }}
+<!-- outputs a content length of 6 words.  -->
+```
+
+
+[pagevars]: /variables/page/
diff --git a/docs/content/en/functions/strings/FindRESubmatch.md b/docs/content/en/functions/strings/FindRESubmatch.md
new file mode 100644
index 000000000..5a0410fdb
--- /dev/null
+++ b/docs/content/en/functions/strings/FindRESubmatch.md
@@ -0,0 +1,95 @@
+---
+title: strings.FindRESubmatch
+linkTitle: findRESubmatch
+description: Returns a slice of all successive matches of the regular expression. Each element is a slice of strings holding the text of the leftmost match of the regular expression and the matches, if any, of its subexpressions.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [findRESubmatch]
+  returnType: '[]string'
+  signatures: ['strings.FindRESubmatch PATTERN INPUT [LIMIT]']
+relatedFunctions:
+  - strings.FindRE
+  - strings.FindRESubmatch
+  - strings.Replace
+  - strings.ReplaceRE
+aliases: [/functions/findresubmatch]
+---
+
+By default, `findRESubmatch` finds all matches. You can limit the number of matches with an optional LIMIT argument. A return value of nil indicates no match.
+
+{{% readfile file="/functions/_common/regular-expressions.md" %}}
+
+## Demonstrative examples
+
+```go-html-template
+{{ findRESubmatch `a(x*)b` "-ab-" }} → [["ab" ""]]
+{{ findRESubmatch `a(x*)b` "-axxb-" }} → [["axxb" "xx"]]
+{{ findRESubmatch `a(x*)b` "-ab-axb-" }} → [["ab" ""] ["axb" "x"]]
+{{ findRESubmatch `a(x*)b` "-axxb-ab-" }} → [["axxb" "xx"] ["ab" ""]]
+{{ findRESubmatch `a(x*)b` "-axxb-ab-" 1 }} → [["axxb" "xx"]]
+```
+
+## Practical example
+
+This markdown:
+
+```text
+- [Example](https://example.org)
+- [Hugo](https://gohugo.io)
+```
+
+Produces this HTML:
+
+```html
+<ul>
+  <li><a href="https://example.org">Example</a></li>
+  <li><a href="https://gohugo.io">Hugo</a></li>
+</ul>
+```
+
+To match the anchor elements, capturing the link destination and text:
+
+```go-html-template
+{{ $regex := `<a\s*href="(.+?)">(.+?)</a>` }}
+{{ $matches := findRESubmatch $regex .Content }}
+```
+
+Viewed as JSON, the data structure of `$matches` in the code above is:
+
+```json
+[
+  [
+    "<a href=\"https://example.org\"></a>Example</a>",
+    "https://example.org",
+    "Example"
+  ],
+  [
+    "<a href=\"https://gohugo.io\">Hugo</a>",
+    "https://gohugo.io",
+    "Hugo"
+  ]
+]
+```
+
+To render the `href` attributes:
+
+```go-html-template
+{{ range $matches }}
+  {{ index . 1 }}
+{{ end }}
+```
+
+Result:
+
+```text
+https://example.org
+https://gohugo.io
+```
+
+{{% note %}}
+You can write and test your regular expression using [regex101.com](https://regex101.com/). Be sure to select the Go flavor before you begin.
+{{% /note %}}
diff --git a/docs/content/en/functions/strings/FindRe.md b/docs/content/en/functions/strings/FindRe.md
new file mode 100644
index 000000000..4a7811f3d
--- /dev/null
+++ b/docs/content/en/functions/strings/FindRe.md
@@ -0,0 +1,41 @@
+---
+title: strings.FindRE
+linkTitle: findRE
+description: Returns a slice of strings that match the regular expression.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [findRE]
+  returnType: string
+  signatures: ['strings.FindRE PATTERN INPUT [LIMIT]']
+relatedFunctions:
+  - strings.FindRE
+  - strings.FindRESubmatch
+  - strings.Replace
+  - strings.ReplaceRE
+aliases: [/functions/findre]
+---
+By default, `findRE` finds all matches. You can limit the number of matches with an optional LIMIT argument.
+
+{{% readfile file="/functions/_common/regular-expressions.md" %}}
+
+This example returns a slice of all second level headings (`h2` elements) within the rendered `.Content`:
+
+```go-html-template
+{{ findRE `(?s)<h2.*?>.*?</h2>` .Content }}
+```
+
+The `s` flag causes `.` to match `\n` as well, allowing us to find an `h2` element that contains newlines.
+
+To limit the number of matches to one:
+
+```go-html-template
+{{ findRE `(?s)<h2.*?>.*?</h2>` .Content 1 }}
+```
+
+{{% note %}}
+You can write and test your regular expression using [regex101.com](https://regex101.com/). Be sure to select the Go flavor before you begin.
+{{% /note %}}
diff --git a/docs/content/en/functions/strings/FirstUpper.md b/docs/content/en/functions/strings/FirstUpper.md
new file mode 100644
index 000000000..320f01eda
--- /dev/null
+++ b/docs/content/en/functions/strings/FirstUpper.md
@@ -0,0 +1,23 @@
+---
+title: strings.FirstUpper
+description: Capitalizes the first character of a given string.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: string
+  signatures: [strings.FirstUpper STRING]
+relatedFunctions:
+  - strings.FirstUpper
+  - strings.Title
+  - strings.ToLower
+  - strings.ToUpper
+aliases: [/functions/strings.firstupper]
+---
+
+```go-html-template
+{{ strings.FirstUpper "foo" }} → "Foo"
+```
diff --git a/docs/content/en/functions/strings/HasPrefix.md b/docs/content/en/functions/strings/HasPrefix.md
new file mode 100644
index 000000000..88a79a935
--- /dev/null
+++ b/docs/content/en/functions/strings/HasPrefix.md
@@ -0,0 +1,24 @@
+---
+title: strings.HasPrefix
+description: Reports whether a string begins with prefix.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [hasPrefix]
+  returnType: bool
+  signatures: [strings.HasPrefix STRING PREFIX]
+relatedFunctions:
+  - strings.Contains
+  - strings.ContainsAny
+  - strings.ContainsNonSpace
+  - strings.HasPrefix
+  - strings.HasSuffix
+aliases: [/functions/hasprefix,/functions/strings.hasprefix]
+---
+
+```go-html-template
+{{ hasPrefix "Hugo" "Hu" }} → true
+```
diff --git a/docs/content/en/functions/strings/HasSuffix.md b/docs/content/en/functions/strings/HasSuffix.md
new file mode 100644
index 000000000..d11f3e8cf
--- /dev/null
+++ b/docs/content/en/functions/strings/HasSuffix.md
@@ -0,0 +1,24 @@
+---
+title: strings.HasSuffix
+description: Reports whether a string ends with suffix.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [hasSuffix]
+  returnType: bool
+  signatures: [strings.HasSuffix STRING SUFFIX]
+relatedFunctions:
+  - strings.Contains
+  - strings.ContainsAny
+  - strings.ContainsNonSpace
+  - strings.HasPrefix
+  - strings.HasSuffix
+aliases: [/functions/hassuffix,/functions/strings/hassuffix]
+---
+
+```go-html-template
+{{ hasSuffix "Hugo" "go" }} → true
+```
diff --git a/docs/content/en/functions/strings/Repeat.md b/docs/content/en/functions/strings/Repeat.md
new file mode 100644
index 000000000..718f24984
--- /dev/null
+++ b/docs/content/en/functions/strings/Repeat.md
@@ -0,0 +1,20 @@
+---
+title: strings.Repeat
+description: Returns a new string consisting of zero or more copies of another string.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: string
+  signatures: [strings.Repeat COUNT INPUT]
+relatedFunctions: []
+aliases: [/functions/strings.repeat]
+---
+
+```go-html-template
+{{ strings.Repeat 3 "yo" }} → "yoyoyo"
+{{ "yo" | strings.Repeat 3 }} → "yoyoyo"
+```
diff --git a/docs/content/en/functions/strings/Replace.md b/docs/content/en/functions/strings/Replace.md
new file mode 100644
index 000000000..8d5e54859
--- /dev/null
+++ b/docs/content/en/functions/strings/Replace.md
@@ -0,0 +1,30 @@
+---
+title: strings.Replace
+linkTitle: replace
+description: Replaces all occurrences of the search string with the replacement string.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [replace]
+  returnType: string
+  signatures: ['strings.Replace INPUT OLD NEW [LIMIT]']
+relatedFunctions:
+  - strings.FindRE
+  - strings.FindRESubmatch
+  - strings.Replace
+  - strings.ReplaceRE
+aliases: [/functions/replace]
+---
+
+Replace returns a copy of `INPUT` with all occurrences of `OLD` replaced with `NEW`.
+The number of replacements can be limited with an optional `LIMIT` argument.
+
+```
+{{ replace "Batman and Robin" "Robin" "Catwoman" }}
+→ "Batman and Catwoman"
+
+{{ replace "aabbaabb" "a" "z" 2 }} → "zzbbaabb"
+```
diff --git a/docs/content/en/functions/strings/ReplaceRE.md b/docs/content/en/functions/strings/ReplaceRE.md
new file mode 100644
index 000000000..247595877
--- /dev/null
+++ b/docs/content/en/functions/strings/ReplaceRE.md
@@ -0,0 +1,51 @@
+---
+title: strings.ReplaceRE
+linkTitle: replaceRE
+description: Returns a string, replacing all occurrences of a regular expression with a replacement pattern.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [replaceRE]
+  returnType: string
+  signatures: ['strings.ReplaceRE PATTERN REPLACEMENT INPUT [LIMIT]']
+relatedFunctions:
+  - strings.FindRE
+  - strings.FindRESubmatch
+  - strings.Replace
+  - strings.ReplaceRE
+aliases: [/functions/replacere]
+---
+By default, `replaceRE` replaces all matches. You can limit the number of matches with an optional LIMIT argument.
+
+{{% readfile file="/functions/_common/regular-expressions.md" %}}
+
+This example replaces two or more consecutive hyphens with a single hyphen:
+
+```go-html-template
+{{ $s := "a-b--c---d" }}
+{{ replaceRE `(-{2,})` "-" $s }} → a-b-c-d
+```
+
+To limit the number of replacements to one:
+
+```go-html-template
+{{ $s := "a-b--c---d" }}
+{{ replaceRE `(-{2,})` "-" $s 1 }} → a-b-c---d
+```
+
+You can use `$1`, `$2`, etc. within the replacement string to insert the groups captured within the regular expression:
+
+```go-html-template
+{{ $s := "http://gohugo.io/docs" }}
+{{ replaceRE "^https?://([^/]+).*" "$1" $s }} → gohugo.io
+```
+
+{{% note %}}
+You can write and test your regular expression using [regex101.com](https://regex101.com/). Be sure to select the Go flavor before you begin.
+{{% /note %}}
+
+[RE2]: https://github.com/google/re2/wiki/Syntax
+[string literal]: https://go.dev/ref/spec#String_literals
diff --git a/docs/content/en/functions/strings/RuneCount.md b/docs/content/en/functions/strings/RuneCount.md
new file mode 100644
index 000000000..a4d5a8dbe
--- /dev/null
+++ b/docs/content/en/functions/strings/RuneCount.md
@@ -0,0 +1,28 @@
+---
+title: strings.RuneCount
+description: Returns the number of runes in a string.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: int
+  signatures: [strings.RuneCount INPUT]
+relatedFunctions:
+  - len
+  - strings.Count
+  - strings.CountRunes
+  - strings.CountWords
+  - strings.RuneCount
+aliases: [/functions/strings.runecount]
+---
+
+In contrast with the [`strings.CountRunes`] function, which excludes whitespace, `strings.RuneCount` counts every rune in a string.
+
+```go-html-template
+{{ "Hello, 世界" | strings.RuneCount }} → 9
+```
+
+[`strings.CountRunes`]: /functions/strings/countrunes
diff --git a/docs/content/en/functions/strings/SliceString.md b/docs/content/en/functions/strings/SliceString.md
new file mode 100644
index 000000000..8d26d76e4
--- /dev/null
+++ b/docs/content/en/functions/strings/SliceString.md
@@ -0,0 +1,24 @@
+---
+title: strings.SliceString
+linkTitle: slicestr
+description: Creates a slice of a half-open range, including start and end indices.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [slicestr]
+  returnType: string
+  signatures: ['strings.SliceString STRING START [END]']
+relatedFunctions: []
+aliases: [/functions/slicestr]
+---
+
+For example, 1 and 4 creates a slice including elements 1 through 3.
+The `end` index can be omitted; it defaults to the string's length.
+
+```go-html-template
+{{ slicestr "BatMan" 3 }}` → "Man"
+{{ slicestr "BatMan" 0 3 }}` → "Bat"
+```
diff --git a/docs/content/en/functions/strings/Split.md b/docs/content/en/functions/strings/Split.md
new file mode 100644
index 000000000..7d15704b2
--- /dev/null
+++ b/docs/content/en/functions/strings/Split.md
@@ -0,0 +1,30 @@
+---
+title: strings.Split
+linkTitle: split
+description: Returns a slice of strings by splitting STRING by DELIM.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [split]
+  returnType: string
+  signatures: [strings.Split STRING DELIM]
+relatedFunctions:
+  - collections.Delimit
+  - strings.Split
+aliases: [/functions/split]
+---
+
+Examples:
+
+```go-html-template
+{{ split "tag1,tag2,tag3" "," }} → ["tag1", "tag2", "tag3"]
+{{ split "abc" "" }} → ["a", "b", "c"]
+```
+
+
+{{% note %}}
+`split` essentially does the opposite of [delimit](/functions/collections/delimit). While `split` creates a slice from a string, `delimit` creates a string from a slice.
+{{% /note %}}
diff --git a/docs/content/en/functions/strings/Substr.md b/docs/content/en/functions/strings/Substr.md
new file mode 100644
index 000000000..9dafa0737
--- /dev/null
+++ b/docs/content/en/functions/strings/Substr.md
@@ -0,0 +1,42 @@
+---
+title: strings.Substr
+linkTitle: substr
+description: Extracts parts of a string from a specified character's position and returns the specified number of characters.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [substr]
+  returnType: string
+  signatures: ['strings.Substr STRING START [LENGTH]']
+relatedFunctions: []
+aliases: [/functions/substr]
+---
+
+It normally takes two argument: `start` and `length`. It can also take one argument: `start`, i.e. `length` is omitted, in which case the substring starting from start until the end of the string will be returned.
+
+To extract characters from the end of the string, use a negative start number.
+
+If `length` is given and is negative, that number of characters will be omitted from the end of string.
+
+```go-html-template
+{{ substr "abcdef" 0 }} → "abcdef"
+{{ substr "abcdef" 1 }} → "bcdef"
+
+{{ substr "abcdef" 0 1 }} → "a"
+{{ substr "abcdef" 1 1 }} → "b"
+
+{{ substr "abcdef" 0 -1 }} → "abcde"
+{{ substr "abcdef" 1 -1 }} → "bcde"
+
+{{ substr "abcdef" -1 }} → "f"
+{{ substr "abcdef" -2 }} → "ef"
+
+{{ substr "abcdef" -1 1 }} → "f"
+{{ substr "abcdef" -2 1 }} → "e"
+
+{{ substr "abcdef" -3 -1 }} → "de"
+{{ substr "abcdef" -3 -2 }} → "d"
+```
diff --git a/docs/content/en/functions/strings/Title.md b/docs/content/en/functions/strings/Title.md
new file mode 100644
index 000000000..1e20d1f59
--- /dev/null
+++ b/docs/content/en/functions/strings/Title.md
@@ -0,0 +1,30 @@
+---
+title: strings.Title
+linkTitle: title
+description: Converts the provided string to title case.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [title]
+  returnType: string
+  signatures: [strings.Title STRING]
+relatedFunctions:
+  - strings.FirstUpper
+  - strings.Title
+  - strings.ToLower
+  - strings.ToUpper
+aliases: [/functions/title]
+---
+
+```go-html-template
+{{ title "table of contents (TOC)" }} → "Table of Contents (TOC)"
+```
+
+By default, Hugo adheres to the capitalization rules in the [Associated Press (AP) Stylebook]. Change your [site configuration] if you would prefer to follow the [Chicago Manual of Style], or to use Go's convention of capitalizing every word.
+
+[Associated Press (AP) Stylebook]: https://www.apstylebook.com/
+[Chicago Manual of Style]: https://www.chicagomanualofstyle.org/home.html
+[site configuration]: /getting-started/configuration/#configure-title-case
diff --git a/docs/content/en/functions/strings/ToLower.md b/docs/content/en/functions/strings/ToLower.md
new file mode 100644
index 000000000..cb76462ea
--- /dev/null
+++ b/docs/content/en/functions/strings/ToLower.md
@@ -0,0 +1,28 @@
+---
+title: strings.ToLower
+linkTitle: lower
+description: Converts all characters in the provided string to lowercase.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [lower]
+  returnType: string
+  signatures: [strings.ToLower INPUT]
+relatedFunctions:
+  - strings.FirstUpper
+  - strings.Title
+  - strings.ToLower
+  - strings.ToUpper
+aliases: [/functions/lower]
+---
+
+
+Note that `lower` can be applied in your templates in more than one way:
+
+```go-html-template
+{{ lower "BatMan" }} → "batman"
+{{ "BatMan" | lower }} → "batman"
+```
diff --git a/docs/content/en/functions/strings/ToUpper.md b/docs/content/en/functions/strings/ToUpper.md
new file mode 100644
index 000000000..d46491637
--- /dev/null
+++ b/docs/content/en/functions/strings/ToUpper.md
@@ -0,0 +1,27 @@
+---
+title: strings.ToUpper
+linkTitle: upper
+description: Converts all characters in a string to uppercase
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [upper]
+  returnType: string
+  signatures: [strings.ToUpper INPUT]
+relatedFunctions:
+  - strings.FirstUpper
+  - strings.Title
+  - strings.ToLower
+  - strings.ToUpper
+aliases: [/functions/upper]
+---
+
+Note that `upper` can be applied in your templates in more than one way:
+
+```go-html-template
+{{ upper "BatMan" }} → "BATMAN"
+{{ "BatMan" | upper }} → "BATMAN"
+```
diff --git a/docs/content/en/functions/strings/Trim.md b/docs/content/en/functions/strings/Trim.md
new file mode 100644
index 000000000..9eae9ee45
--- /dev/null
+++ b/docs/content/en/functions/strings/Trim.md
@@ -0,0 +1,45 @@
+---
+title: strings.Trim
+linkTitle: trim
+description: Returns a slice of a passed string with all leading and trailing characters from cutset removed.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [title]
+  returnType: string
+  signatures: [strings.Trim INPUT CUTSET]
+relatedFunctions:
+  - strings.Chomp
+  - strings.Trim
+  - strings.TrimLeft
+  - strings.TrimPrefix
+  - strings.TrimRight
+  - strings.TrimSuffix
+aliases: [/functions/trim]
+---
+
+```go-html-template
+{{ trim "++Batman--" "+-" }} → "Batman"
+```
+
+`trim` *requires* the second argument, which tells the function specifically what to remove from the first argument. There is no default value for the second argument, so **the following usage will not work**:
+
+```go-html-template
+{{ trim .Inner }}
+```
+
+Instead, the following example tells `trim` to remove extra new lines from the content contained in the [shortcode `.Inner` variable][shortcodevars]:
+
+```go-html-template
+{{ trim .Inner "\n" }}
+```
+
+{{% note %}}
+Go templates also provide a simple [method for trimming whitespace](/templates/introduction/#whitespace) from either side of a Go tag by including a hyphen (`-`).
+{{% /note %}}
+
+
+[shortcodevars]: /variables/shortcodes/
diff --git a/docs/content/en/functions/strings/TrimLeft.md b/docs/content/en/functions/strings/TrimLeft.md
new file mode 100644
index 000000000..3924e492f
--- /dev/null
+++ b/docs/content/en/functions/strings/TrimLeft.md
@@ -0,0 +1,33 @@
+---
+title: strings.TrimLeft
+description: Returns a slice of a given string with all leading characters contained in the cutset removed.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: string
+  signatures: [strings.TrimLeft CUTSET STRING]
+relatedFunctions:
+  - strings.Chomp
+  - strings.Trim
+  - strings.TrimLeft
+  - strings.TrimPrefix
+  - strings.TrimRight
+  - strings.TrimSuffix
+aliases: [/functions/strings.trimleft]
+---
+
+Given the string `"abba"`, leading `"a"`'s can be removed a follows:
+
+```go-html-template
+{{ strings.TrimLeft "a" "abba" }} → "bba"
+```
+
+Numbers can be handled as well:
+
+```go-html-template
+{{ strings.TrimLeft 12 1221341221 }} → "341221"
+```
diff --git a/docs/content/en/functions/strings/TrimPrefix.md b/docs/content/en/functions/strings/TrimPrefix.md
new file mode 100644
index 000000000..37657732d
--- /dev/null
+++ b/docs/content/en/functions/strings/TrimPrefix.md
@@ -0,0 +1,29 @@
+---
+title: strings.TrimPrefix
+description: Returns a given string s without the provided leading prefix string. If s doesn't start with prefix, s is returned unchanged.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: string
+  signatures: [strings.TrimPrefix PREFIX STRING]
+relatedFunctions:
+  - strings.Chomp
+  - strings.Trim
+  - strings.TrimLeft
+  - strings.TrimPrefix
+  - strings.TrimRight
+  - strings.TrimSuffix
+aliases: [/functions/strings.trimprefix]
+---
+
+Given the string `"aabbaa"`, the specified prefix is only removed if `"aabbaa"` starts with it:
+
+```go-html-template
+{{ strings.TrimPrefix "a" "aabbaa" }} → "abbaa"
+{{ strings.TrimPrefix "aa" "aabbaa" }} → "bbaa"
+{{ strings.TrimPrefix "aaa" "aabbaa" }} → "aabbaa"
+```
diff --git a/docs/content/en/functions/strings/TrimRight.md b/docs/content/en/functions/strings/TrimRight.md
new file mode 100644
index 000000000..fa538b605
--- /dev/null
+++ b/docs/content/en/functions/strings/TrimRight.md
@@ -0,0 +1,33 @@
+---
+title: strings.TrimRight
+description: Returns a slice of a given string with all trailing characters contained in the cutset removed.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: string
+  signatures: [strings.TrimRight CUTSET STRING]
+relatedFunctions:
+  - strings.Chomp
+  - strings.Trim
+  - strings.TrimLeft
+  - strings.TrimPrefix
+  - strings.TrimRight
+  - strings.TrimSuffix
+aliases: [/functions/strings.trimright]
+---
+
+Given the string `"abba"`, trailing `"a"`'s can be removed a follows:
+
+```go-html-template
+{{ strings.TrimRight "a" "abba" }} → "abb"
+```
+
+Numbers can be handled as well:
+
+```go-html-template
+{{ strings.TrimRight 12 1221341221 }} → "122134"
+```
diff --git a/docs/content/en/functions/strings/TrimSuffix.md b/docs/content/en/functions/strings/TrimSuffix.md
new file mode 100644
index 000000000..6dc9becfc
--- /dev/null
+++ b/docs/content/en/functions/strings/TrimSuffix.md
@@ -0,0 +1,29 @@
+---
+title: strings.TrimSuffix
+description: Returns a given string s without the provided trailing suffix string. If s doesn't end with suffix, s is returned unchanged.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: []
+  returnType: string
+  signatures: [strings.TrimSuffix SUFFIX STRING]
+relatedFunctions:
+  - strings.Chomp
+  - strings.Trim
+  - strings.TrimLeft
+  - strings.TrimPrefix
+  - strings.TrimRight
+  - strings.TrimSuffix
+aliases: [/functions/strings.trimsuffix]
+---
+
+Given the string `"aabbaa"`, the specified suffix is only removed if `"aabbaa"` ends with it:
+
+```go-html-template
+{{ strings.TrimSuffix "a" "aabbaa" }} → "aabba"
+{{ strings.TrimSuffix "aa" "aabbaa" }} → "aabb"
+{{ strings.TrimSuffix "aaa" "aabbaa" }} → "aabbaa"
+```
diff --git a/docs/content/en/functions/strings/Truncate.md b/docs/content/en/functions/strings/Truncate.md
new file mode 100644
index 000000000..0bd78d840
--- /dev/null
+++ b/docs/content/en/functions/strings/Truncate.md
@@ -0,0 +1,26 @@
+---
+title: strings.Truncate
+linkTitle: truncate
+description: Truncates a text to a max length without cutting words or leaving unclosed HTML tags.
+categories: [functions]
+keywords: []
+menu:
+  docs:
+    parent: functions
+function:
+  aliases: [truncate]
+  returnType: template.HTML
+  signatures: ['strings.Truncate SIZE [ELLIPSIS] INPUT']
+relatedFunctions: []
+aliases: [/functions/truncate]
+---
+
+Since Go templates are HTML-aware, `truncate` will intelligently handle normal strings vs HTML strings:
+
+```go-html-template
+{{ "<em>Keep my HTML</em>" | safeHTML | truncate 10 }} → <em>Keep my …</em>
+```
+
+{{% note %}}
+If you have a raw string that contains HTML tags you want to remain treated as HTML, you will need to convert the string to HTML using the [`safeHTML` template function](/functions/safe/html) before sending the value to truncate. Otherwise, the HTML tags will be escaped when passed through the `truncate` function.
+{{% /note %}}