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    Also keep in mind that dos/windows use "0x0d 0x0a", also noted as "CR LF". But unix/linux use only "0x0a" or "LF". So when you open a windows document in linux it detects extra "CR", and when you open a linux document in windows it doesn't detect new lines.
    – LatinSuD
    Commented Jun 5, 2014 at 8:47
  • 4
    @LatinSuD caret notation (and corresponding use of the Ctrl-key) relates to the C0 control set (historically part of ASCII) directly and not whether and how a given operating system or program uses part of that set in representing new lines, or anything else. Similarly, whether ^H deletes a character or allows overprinting (such as n^H~ as an obsolete way to produce ñ) or any other actual use of the control character is separate from the caret notation.
    – Jon Hanna
    Commented Jun 5, 2014 at 12:05
  • 13
    old one ... I can't remember the original code, but ctrl-G rings a bell!
    – user_1818839
    Commented Jun 5, 2014 at 13:28
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    @OlivierDulac no, the ^M is exactly a carriage return, just like ^J is exactly a line-feed. While different OSs have had different views as to whether line-feed and/or carriage return or something else (like the Newline character used by some IBM characters but not part of ASCII and so not part of the historical heritage of some other OSs) should represent a new line in a text file, and while some programs have then overridden that in different ways, U+000D itself is still a carriage return, whatever later operating systems like Unix or DOS decided to do with it. (Of course, calling it...
    – Jon Hanna
    Commented Jun 5, 2014 at 21:43
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    @OlivierDulac ... U+000D is proleptic, since that name came with Unicode in the 1990s, but that does quite definitely reference the code as it existed in ASCII in 1963, anf through that as it existed in Murray's modified Baudot code in 1901. Murray was solving problems related to moving paper around, with the same tools used in the concept of "text file" many decades later. Hammer a screw into something like a nail, and it's still a screw. Use LF and/or CR to represent the end of a line in a text file, and they're still line-feeds and carriage returns.
    – Jon Hanna
    Commented Jun 5, 2014 at 21:47