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RemoveLineBreaks

Function RemoveLineBreaks( aInputString : string) : string

Example​

procedure ScriptEvent(var Value: variant);
begin
  Value := RemoveLineBreaks('First' + #13#10 + 'Second' + #10 + 'Third');
  // FirstSecondThird
end;

Usage​

RemoveLineBreaks removes every CRLF pair and every remaining LF character while preserving lone carriage returns.

Important behavior and quirks

  • A lone #13 is preserved. Classic-Mac or malformed CR-only line endings therefore remain in the result.
  • Adjacent lines are concatenated directly. Use EncodeLineBreaks when a visible separator is required.
  • Unicode line separator U+2028, paragraph separator U+2029 and other control characters are unchanged.
  • Empty input returns empty. The source is not mutated.

Additional Technical Info​

RemoveLineBreaks removes Windows CRLF pairs and Unix-style LF characters. It does not remove an isolated carriage return (#13). No separator is inserted where a line ending was removed.

The example is fictional and source-reviewed only.

How it works

Velox performs two case-sensitive replace-all passes:

  1. replace every #13#10 pair with empty text; then
  2. replace every remaining #10 with empty text.

The first pass matters because it removes the carriage return that belongs to a Windows line ending. The second pass handles lone line feeds.

Performance and concurrency

The complete string is scanned and potentially allocated twice. The function is otherwise stateless.

External references

Created 2026-07-15