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Sun, 14 Aug 2022 12:57:42 -0700 (PDT) MIME-Version: 1.0 References: <20220811230901.471640-1-felipe.contreras@gmail.com> In-Reply-To: <20220811230901.471640-1-felipe.contreras@gmail.com> From: Bart Schaefer Date: Sun, 14 Aug 2022 12:57:31 -0700 Message-ID: Subject: Re: [PATCH v2] prompt: support generic non-visible regions To: Felipe Contreras Cc: zsh-workers@zsh.org Content-Type: text/plain; charset="UTF-8" X-Seq: 50474 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: On Thu, Aug 11, 2022 at 4:09 PM Felipe Contreras wrote: > > readline uses \001 (start of header) and \002 (start of text) as markers > to delimit a non-visible character zone, which are necessary to > calculate the width of a prompt. How does one embed a literal ctrl-A or ctrl-B in the prompt? I haven't found any readline documentation that explains the use of "start of header" or "start of text". In zsh, should an extra digit immediately following \001 be treated as a "glitch" width? I'm also leaning to the opinion that \001 and \002 should only be recognized when PROMPT_PERCENT is unset.