pull request complete support

[Jean-Christophe PLAGNIOL-VILLARD]

On 00:46 Fri 10 Jun     , Hubert Feurstein wrote:
> Hi Jean-Christophe,
> 
> I've tested it in the sandbox and get an access violation when I type
> "dev<TAB>". Here is the backtrace:
> 
> #0  0x0040dd1b in strlen (s=0x0) at lib/string.c:228
> #1  0x00404652 in device_param_complete (begin=0 '\000',
> dev=0xb763fa94, sl=0xbfffefe0, instr=0x0) at common/complete.c:115
> #2  0x00404a24 in env_param_complete (sl=0xbfffefe0, instr=0x426160
> "dev", eval=0) at common/complete.c:209
> #3  0x00404c59 in complete (instr=0x426160 "dev", outstr=0xbffff064)
> at common/complete.c:282
> #4  0x00415687 in readline (prompt=0x426ac0 "barebox:/ ", buf=0x426160
> "dev", len=1024) at lib/readline.c:209
> #5  0x00401363 in get_user_input (i=0xbffff1c8) at common/hush.c:414
> #6  0x004014c2 in file_get (i=0xbffff1c8) at common/hush.c:463
> #7  0x00402e4f in parse_stream (dest=0xbffff154, ctx=0xbffff198,
> input=0xbffff1c8, end_trigger=10) at common/hush.c:1278
> #8  0x00402fd2 in parse_stream_outer (ctx=0xbffff198, inp=0xbffff1c8,
> flag=2) at common/hush.c:1428
> #9  0x00403770 in run_shell () at common/hush.c:1647
> #10 0x00407d6a in start_barebox () at common/startup.c:167
> #11 0x0041f082 in main ()

try with this patch

Best Regards,
J.
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