Re: History modifier :p ignored prior to another history reference

[Piotr Grzybowski]

On 5 May 2016, at 20:08, Piotr Grzybowski wrote:

> [..]
> Currently the design indicates: :p applies to the whole line.

 As Dean just has pointed out to me, this sentence is obviously wrong. it 
should be:

Currently the design indicates: the last :p applies to the whole line, the 
information about existence of others before it, is overwritten.

 sorry,
pg


> On 3 May 2016, at 18:15, Dean Stanton wrote:
> 
>> Configuration Information [Automatically generated, do not change]:
>> Machine: x86_64
>> OS: linux-gnu
>> Compiler: gcc
>> Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' 
>> -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-redhat-linux-gnu' 
>> -DCONF_VENDOR='redhat' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' 
>> -DSHELL -DHAVE_CONFIG_H   -I.  -I. -I./include 
>> -I./lib  -D_GNU_SOURCE -DRECYCLES_PIDS  -O2 -g -pipe -Wall 
>> -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector 
>> --param=ssp-buffer-size=4 -m64 -mtune=generic
>> uname output: Linux dstanton-vm.tintri.com 2.6.32.26-175.fc12.x86_64 #1 SMP 
>> Wed Dec 1 21:39:34 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
>> Machine Type: x86_64-redhat-linux-gnu
>> 
>> Bash Version: 4.0
>> Patch Level: 38
>> Release Status: release
>> 
>> Description:
>> History modifier :p is not honored when it appears prior to another history 
>> reference on the same command line.
>> 
>>        I tried to find a website with known bash bugs (to search to see if 
>> this issue was already discussed), but didn't find such a site.
>> 
>> Repeat-By:
>> $ echo one two three four
>>        one two three four
>>        $ echo !:2:p ; echo !$          # :p was ignored!
>>        echo two ; echo four
>>        two
>>        four
>> 
>> $ echo one two three four
>>        one two three four
>>        $ echo !:p !!       # :p was ignored!
>> echo one two three four echo one two three four
>> one two three four echo one two three four
>> 
>> 
>>        I expected the entire command line to be only printed and not 
>> executed. The manpage says
>>       p      Print the new command but do not execute it.
>>        Instead, the :p was ignored and the entire command line was (printed 
>> and then) executed.
>> 
>>        $ echo one two three four
>>        one two three four
>>        $ echo !:2 ; echo !$:p          # :p was heeded.
>>        echo two ; echo four
>> $ echo one two three four
>> $ echo !:1:p !$
>> # :p was ignored
>> echo one four
>> one four
>> 
>> 
>