Convert the number of indentation spaces in a sourcecode.

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#r "WindowsBase"
#r "PresentationCore"
open System
open System.Text.RegularExpressions
open System.Windows
let indentConverter before after =
  let spaces n = String(' ',n)
  Regex.Replace(Clipboard.GetText(), spaces before, spaces after)
  |> Clipboard.SetText
indentConverter 4 2

namespace System

namespace System.Text

namespace System.Text.RegularExpressions

namespace System.Windows

val indentConverter : before:int -> after:int -> unit

Full name: Script.indentConverter

val before : int

val after : int

val spaces : (int -> String)

val n : int

Multiple items
type String =
  new : value:char -> string + 7 overloads
  member Chars : int -> char
  member Clone : unit -> obj
  member CompareTo : value:obj -> int + 1 overload
  member Contains : value:string -> bool
  member CopyTo : sourceIndex:int * destination:char[] * destinationIndex:int * count:int -> unit
  member EndsWith : value:string -> bool + 2 overloads
  member Equals : obj:obj -> bool + 2 overloads
  member GetEnumerator : unit -> CharEnumerator
  member GetHashCode : unit -> int
  ...

Full name: System.String

--------------------
String(value: nativeptr<char>) : unit
String(value: nativeptr<sbyte>) : unit
String(value: char []) : unit
String(c: char, count: int) : unit
String(value: nativeptr<char>, startIndex: int, length: int) : unit
String(value: nativeptr<sbyte>, startIndex: int, length: int) : unit
String(value: char [], startIndex: int, length: int) : unit
String(value: nativeptr<sbyte>, startIndex: int, length: int, enc: Text.Encoding) : unit

Multiple items
type Regex =
  new : pattern:string -> Regex + 1 overload
  member GetGroupNames : unit -> string[]
  member GetGroupNumbers : unit -> int[]
  member GroupNameFromNumber : i:int -> string
  member GroupNumberFromName : name:string -> int
  member IsMatch : input:string -> bool + 1 overload
  member Match : input:string -> Match + 2 overloads
  member Matches : input:string -> MatchCollection + 1 overload
  member Options : RegexOptions
  member Replace : input:string * replacement:string -> string + 5 overloads
  ...

Full name: System.Text.RegularExpressions.Regex

--------------------
Regex(pattern: string) : unit
Regex(pattern: string, options: RegexOptions) : unit

Regex.Replace(input: string, pattern: string, evaluator: MatchEvaluator) : string
Regex.Replace(input: string, pattern: string, replacement: string) : string
Regex.Replace(input: string, pattern: string, evaluator: MatchEvaluator, options: RegexOptions) : string
Regex.Replace(input: string, pattern: string, replacement: string, options: RegexOptions) : string

type Clipboard =
  static member Clear : unit -> unit
  static member ContainsAudio : unit -> bool
  static member ContainsData : format:string -> bool
  static member ContainsFileDropList : unit -> bool
  static member ContainsImage : unit -> bool
  static member ContainsText : unit -> bool + 1 overload
  static member GetAudioStream : unit -> Stream
  static member GetData : format:string -> obj
  static member GetDataObject : unit -> IDataObject
  static member GetFileDropList : unit -> StringCollection
  ...

Full name: System.Windows.Clipboard

Clipboard.GetText() : string
Clipboard.GetText(format: TextDataFormat) : string

Clipboard.SetText(text: string) : unit
Clipboard.SetText(text: string, format: TextDataFormat) : unit