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Convert control characters to bindkey/quoted-insert -style escape sequences

X-seq: zsh-users 29553
From: Marlon Richert <marlon.richert@xxxxxxxxx>
To: Zsh Users <zsh-users@xxxxxxx>
Subject: Convert control characters to bindkey/quoted-insert -style escape sequences
Date: Wed, 24 Jan 2024 15:35:24 +0200
Archived-at: <https://zsh.org/users/29553>
List-id: <zsh-users.zsh.org>

I know I can convert control characters to $'...' -style escape sequences using ${(qqqq)...} or ${(q+)...} expansion.

However, how can I convert control characters to bindkey/quoted-insert -style escape sequences?

For example, I want to convert a newline character to ^M and not $'\n'

Basically, I want the inverse of a ${(g:c:)...} expansion.

Follow-Ups:
- Re: Convert control characters to bindkey/quoted-insert -style escape sequences
  - From: Bart Schaefer
- Re: Convert control characters to bindkey/quoted-insert -style escape sequences
  - From: Roman Perepelitsa

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