4 ms·

Is <ctrl-v><esc> same as \x1b? Why are they same?

• tyingq 6y ago
  Yes, 0x1b is an ascii <esc>. <ctrl-v> essentially means "insert the next key I press verbatim". So, like in Vim, <esc> would switch modes, unless you press <ctrl-v> first. Helpful if you're trying to insert a control character into a file, or echo a literal <ctrl-c> etc.
  • haecceity 6y ago
    Does the terminal emulator handle the ctrl-v or shell or somewhere in kernel?
    • deleted 6y ago
      [deleted]
    • jclulow 6y ago
      Whichever facility receives and processes the inbound keystrokes. In simple software that uses the terminal in canonical mode, the line discipline (usually in the kernel) handles the batching up of bytes into lines before passing them onto the software, and thus provides the line editing. In more complex software that puts the terminal into raw mode, it's then handled in that software; e.g., by libedit or readline or some bespoke terminal handling.