Thanks, but... If not correct, then what is this supposed to mean (common/main.c :: builtin_run_command()):
/* * Find separator, or string end * Allow simple escape of ';' by writing ";" */
This does not indicate "by chance", or was it something else that was not correct? BR // Mats
From: Wolfgang Denk [wd@denx.de] Sent: Thursday, November 01, 2012 9:00 PM To: Mats Kärrman Cc: u-boot@lists.denx.de Subject: Re: [U-Boot] hashtable lib and escaping
Dear Mats Kärrman,
In message ED3E0BCACD909541BA94A34C4A164D4C425CEE7A@post.tritech.se you wrote:
I used to have a working setup using U-Boot 2009.03 before upgrading to U-Boot 2012.07. The problem I'm facing is related to the escaping policies of lib/hashtable.c.
What I did before was for example having something like this in my default environment:
bootcmd=run first_boot first_boot=setenv bootcmd my_select;run ubi_boot;saveenv;boot
THis syntax has never been correct. If it ever worked, than only by chance (read: because of incorrect/imperfect code).
With the escape parsing of himport_r(), the '' is simply dropped and it is no longer possible to escape ';' so the "run ubi_boot" is immediately executed and nothing is saved... The function header mentions the possibility for multi-line values but thi s should not come at the cost of not being able to escape ';'.
You have to be casreful here and keep in mind that (de-) escaping will take place in a different places: himport() (resp. setenv()) is only one part of this story - the other part is when you will actually pass this string to the command processor (the shell).
See here:
=> setenv foo 'echo part one\;echo part two' ; print foo ; run foo foo=echo part one;echo part two part one part two => setenv foo 'echo part one\\;echo part two' ; print foo ; run foo foo=echo part one\;echo part two part one;echo part two =>Best regards,
Wolfgang Denk
-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de "No matter where you go, there you are..." - Buckaroo Banzai