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Full Discussion: A dash to GOTO or a dash from GOTO, that is the question...
Top Forums Shell Programming and Scripting A dash to GOTO or a dash from GOTO, that is the question... Post 303038991 by wisecracker on Thursday 19th of September 2019 03:20:46 AM
Old 09-19-2019
Quote:
Originally Posted by MadeInGermany
Isn't line_number always equal to or greater than start_line?
It works because the output file is truncated at the right moment.

I would rather go for
Code:
goto()
{
    line_copy=
    while IFS='' read -r line
    do
        [ "$line" = "$1" ] && line_copy=1
        [ -n "$line_copy" ] && echo "$line"
    done < "$0" > /tmp/goto.tmp
    . /tmp/goto.tmp
}

Eventually swap the two lines in the loop, to omit the first line (then you do not need to prefix the lable with a nop).

Of course this is a hack. A function puts something on the "return" stack...
I will replace my version with your function and give it a whirl.
I had in fact thought about using #some_label: as both methods would not create an error, something like command not found under normal running but I see your point.
And of course it's a hack, as I always quote "if there is a back door I will find it" and hacks by their nature are back doors....
 

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LEARN ABOUT DEBIAN

gpe-question

GPE-QUESTION(1) 						   gpe-question 						   GPE-QUESTION(1)

NAME

       gpe-question - GPE interface for asking questions from shell scripts.

SYNOPSIS

       gpe-question [---icon] name {--question "Question text"} {--buttons icon1:text1} [icon2:text2 ...]

DESCRIPTION

       This manual page was written for the Debian(TM) distribution because the original program does not have a manual page.

       gpe-question provides dialogues to raise a question within the GPE Palmtop Environment with cancel and ok buttons.

OPTIONS

       --question STRING
	  The question to ask the user via the dialogue.

       --buttons type:label
	  The type and label of the button(s) to be shown. Repeat for additional buttons.

EXAMPLES

       gpe-question "test" --question "Do you want to check first?"  --buttons YES:yes NO:no

AUTHOR

       This manual page was written by Neil Williams <codehelp@debian.org> for the Debian(TM) system (but may be used by others). Permission is
       granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version
       published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

AUTHOR

       Moray Allen
	  Author.

COPYRIGHT

       Copyright (C) 2007 Neil Williams

Debian 1							 January 16, 2007						   GPE-QUESTION(1)
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