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From: Luis Machado <lgustavo@codesourcery.com>
To: Yao Qi <qiyaoltc@gmail.com>, Pedro Alves <palves@redhat.com>
Cc: Simon Marchi <simon.marchi@polymtl.ca>,
	Jerome Guitton	<guitton@adacore.com>,
	<gdb-patches@sourceware.org>
Subject: Re: [RFA] candidates for ambiguous command in upper case
Date: Wed, 11 Jan 2017 17:35:00 -0000	[thread overview]
Message-ID: <7048f2b6-1816-a4e9-e78e-4c9743271c03@codesourcery.com> (raw)
In-Reply-To: <20170111172550.GL9518@E107787-LIN>

On 01/11/2017 11:25 AM, Yao Qi wrote:
> On 17-01-10 17:00:28, Pedro Alves wrote:
>> On 01/10/2017 03:28 PM, Simon Marchi wrote:
>>> On 2017-01-10 10:19, Jerome Guitton wrote:
>>>> Yao Qi (qiyaoltc@gmail.com):
>>>>
>>>>> IMO, there is nothing wrong.  There is no command starts from "EX".
>>>>
>>>> This is a bit weird to accept upper-case EXEC-FIL then... isn't it?
>>>>
>>>> (gdb) exec-fil
>>>> No executable file now.
>>>> (gdb) EXEC-FIL
>>>> No executable file now.
>>>
>>> I agree that if GDB accepts commands in upper case, the ambiguous
>>> command message should work accordingly.
>>
>> Agreed.  I thought that the manual mentioned that gdb accepts
>> commands in either case, but I can't find it now.
>>
>
> I don't find gdb accepts commands in either case in the manual, and
> I am surprised that gdb does so.  Actually, gdb does so since 1988!
>
> commit 7b4ac7e1ed2c4616bce56d1760807798be87ac9e
> Author: gdb-2.4+.aux.coff <gdb@fsf.org>
> Date:   Sat Jan 16 04:39:57 1988 +0000
>
>     gdb-2.4+.aux.coff
>
> in lookup_cmd function,
>
> +  /* Find end of command name.  */
> +
> +  p = *line;
> +  while (*p == '-'
> +        || (*p >= 'a' && *p <= 'z')
> +        || (*p >= 'A' && *p <= 'Z')
> +        || (*p >= '1' && *p <= '9'))
> +    {
> +      if (*p >= 'A' && *p <= 'Z')
> +       *p += 'a' - 'A';
> +      p++;
> +    }
>
> however, I don't see any reason to do so.  At least, we need to be
> clear that whether gdb accepts upper case commands or not.
>

I think it makes for a more coherent command-handling environment. So 
load would be the same as LOAD, Load, LoAd, lOaD.

I can't think of a scenario where differentiating uppercase/lowercase 
commands in GDB's CLI would make a difference. Though i've noticed that 
MI commands are case-sensitive, which is incoherent. We ought to fix 
that too.


  reply	other threads:[~2017-01-11 17:35 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1484058324-5368-1-git-send-email-guitton@adacore.com>
2017-01-10 15:07 ` Yao Qi
2017-01-10 15:19   ` Jerome Guitton
2017-01-10 15:28     ` Simon Marchi
2017-01-10 15:40       ` Jerome Guitton
2017-01-10 17:00       ` Pedro Alves
2017-01-11 15:37         ` Jerome Guitton
2017-01-11 17:26         ` Yao Qi
2017-01-11 17:35           ` Luis Machado [this message]
2017-01-11 20:24           ` Pedro Alves
2017-01-12 10:18             ` Jerome Guitton
2017-01-12 16:37               ` Pedro Alves
2017-01-16 16:32                 ` Jerome Guitton
2017-01-17  1:58                   ` Pedro Alves
2017-01-17 16:29                     ` Luis Machado
2017-01-17 16:35                       ` Pedro Alves
2017-01-17 16:51                         ` Luis Machado
2017-01-17 17:04                           ` Pedro Alves
2017-01-17 17:13                             ` Luis Machado
2017-01-31 14:39                       ` Jerome Guitton
2017-01-31 15:20                         ` Pedro Alves
2017-02-08 18:05                           ` Jerome Guitton
2017-07-24 21:17                             ` Simon Marchi
2017-07-24 21:48                               ` [PATCH] define_command: Don't convert command name to lower case Simon Marchi
2017-07-24 21:54                                 ` Simon Marchi
2017-08-28 21:20                                   ` Simon Marchi
2017-07-26 12:42                                 ` Jerome Guitton

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