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hmp: make memchar-read escape ASCII control chars except \n and \t

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Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Markus Armbruster 2013-02-06 21:27:26 +01:00 • committed by Anthony Liguori
parent de1cc36e10
commit 543f34126b
2 changed files with 16 additions and 1 deletions
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2
hmp-commands.hx
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@ -869,6 +869,8 @@ STEXI
@findex ringbuf_read
Read and print up to @var{size} bytes from ring buffer character
device @var{device}.
Certain non-printable characters are printed \uXXXX, where XXXX is the
character code in hexadecimal. Character \ is printed \\.
Bug: can screw up when the buffer contains invalid UTF-8 sequences,
NUL characters, after the ring buffer lost data, and when reading
stops because the size limit is reached.