Re: my zenity adventure

> On 27 March 2023 01:35:39 CEST, ToddAndMargo via perl6-users 
> <perl6-users@perl.org> wrote:
> 
>     Hi All,
> 
>     Fedora 36
>     zenity-3.43.0-3.fc37.x86_64
>     rakudo-pkg-2022.7.0-03.x86_64
> 
> 
>     My adventure with a zenity call!
> 
>     I just worked around a problem with a call to zenity:
> 
>     Note: zenity can not resolve Raku's "\n", so you have to
>     preformat the "text" field with "sprintf".
> 
> 
>     $NotifyStr = sprintf "\nStarting $ProgramName\n\nTakes about $Timeout seconds to finish compiling\nMozilla Mirror = <$MozillaMirror>\n";
> 
>     The above gave me "All updates are complete" in the text
>     field. Hmmmmmmmm.  I do goof a lot of stuff up (who me????)
>     but I am "pretty sure" I did not tell zenity that.
>     I did a direct print of $NotifyStr to the command
>     line to make sure anyway.
> 
> 
>     I traced it down to the "<" and ">".
> 
>     Separating the "<" and ">" with `~ ">" ~` in the string
>     did not help.
> 
> 
>     Taking out the "<" and ">" got rid of the problem.  Not
>     as pretty, but it will due.
> 
>     $NotifyStr = sprintf "\nStarting $ProgramName\n\nTakes about $Timeout seconds to finish compiling\nMozilla Mirror = $MozillaMirror\n";
> 
> 
>     The zenity call:
> 
>     shell "zenity --info --title \"$Title\" --text \"$NotifyStr\" --width=220 --timeout=$Timeout &";
> 
> 
>     I was unable to reproduce this from a direct call
>     to zenity from the command line, so it was probably
>     something that happened between Raku and zenity.
> 
>     Of interest, on the direct call "\n" came out as an "S".
> 
> 
>     Hope this helps someone else.
>

> On 3/26/23 22:53, Timo Paulssen via perl6-users wrote:
>> Hey Todd,
>> 
>> Its likely that because you are using the shell sub the < and > 
>> characters have been interpreted by the shell to mean redirection. Check 
>> for odd files in your working directory that have the text you saw 
>> zenity output in them, and perhaps there is even a file with heat the 
>> capital letter S.
>> 
>> When you are putting together strings like that to put into a shell 
>> call, you are dancing on very thin ice wearing Doc Martens and a 
>> backpack filled to point of bursting with tungsten bars while balancing 
>> buckets of boiling water on the tip of your nose and also for some 
>> reason there are sharks below the ice ...
>> 
>> Also, sprintf should pass \n through as-is Anne it likely got 
>> interpreted later on by some other part of the process.
>> 
>> Be extremely weary of your variables containing double quotes in them, 
>> and slightly weary of single quotes.
>> 
>> Hope that helps you find out what exactly is going on
>> 



I figured!  Thank you!


Hmmm, "All updates complete" sound like it may have came from

     # dnf updates

• my zenity adventure by ToddAndMargo via perl6-users
• Re: my zenity adventure by Timo Paulssen via perl6-users
• Re: my zenity adventure by ToddAndMargo via perl6-users