From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Borowski Subject: [PATCH] \e in "echo" and "printf" builtins Date: Sat, 28 Jun 2014 06:56:53 +0200 Message-ID: <20140628045653.GA5097@angband.pl> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="sm4nu43k4a2Rpi4c" Return-path: Received: from tartarus.angband.pl ([89.206.35.136]:60860 "EHLO tartarus.angband.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750727AbaF1FR7 (ORCPT ); Sat, 28 Jun 2014 01:17:59 -0400 Received: from kilobyte by tartarus.angband.pl with local (Exim 4.80) (envelope-from ) id 1X0kh3-0001PS-Di for dash@vger.kernel.org; Sat, 28 Jun 2014 06:56:53 +0200 Content-Disposition: inline Sender: dash-owner@vger.kernel.org List-Id: dash@vger.kernel.org To: dash@vger.kernel.org --sm4nu43k4a2Rpi4c Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi! I'm not sure what's your policy towards extensions, but \e as \033 is something ubiquitous in the Unix world. C compilers (gcc, clang, icc and tcc -- but not MSVC), perl, shells (bash and zsh -- but not dash), etc. What about supporting it in dash as well? Patch attached. -- Gnome 3, Windows 8, Slashdot Beta, now Firefox Ribbon^WAustralis. WTF is going on with replacing usable interfaces with tabletized ones? --sm4nu43k4a2Rpi4c Content-Type: text/x-diff; charset=us-ascii Content-Disposition: attachment; filename="0001-Support-e-in-echo-and-printf-builtins.patch" >From a6e6e7b6f3a725b4ca0514f22e9ee4cfe2c225e2 Mon Sep 17 00:00:00 2001 From: Adam Borowski Date: Sat, 28 Jun 2014 06:29:56 +0200 Subject: [PATCH] Support \e in "echo" and "printf" builtins. Signed-off-by: Adam Borowski --- src/bltin/printf.c | 1 + src/dash.1 | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/src/bltin/printf.c b/src/bltin/printf.c index 893295c..98d954c 100644 --- a/src/bltin/printf.c +++ b/src/bltin/printf.c @@ -300,6 +300,7 @@ conv_escape(char *str, int *conv_ch) case '\\': value = '\\'; break; /* backslash */ case 'a': value = '\a'; break; /* alert */ case 'b': value = '\b'; break; /* backspace */ + case 'e': value = '\e'; break; /* escape */ case 'f': value = '\f'; break; /* form-feed */ case 'n': value = '\n'; break; /* newline */ case 'r': value = '\r'; break; /* carriage-return */ diff --git a/src/dash.1 b/src/dash.1 index 3847d98..7107faa 100644 --- a/src/dash.1 +++ b/src/dash.1 @@ -1199,6 +1199,8 @@ Subsequent output is suppressed. This is normally used at the end of the last argument to suppress the trailing newline that .Ic echo would otherwise output. +.It Li \ee +Outputs an escape character (ESC). .It Li \ef Output a form feed. .It Li \en @@ -1573,6 +1575,8 @@ The characters and their meanings are as follows: Write a \*[Lt]bell\*[Gt] character. .It Cm \eb Write a \*[Lt]backspace\*[Gt] character. +.It Cm \ee +Write an \*[Lt]escape\*[Gt] (ESC) character. .It Cm \ef Write a \*[Lt]form-feed\*[Gt] character. .It Cm \en -- 2.0.0 --sm4nu43k4a2Rpi4c--