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Clarify documentation of 'bufferpos-to-filepos' and 'filepos-to-bufferpos'

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* doc/lispref/nonascii.texi (Text Representations): Clarify that
'exact' value of QUALITY argument to 'bufferpos-to-filepos' and
'filepos-to-bufferpos' can lead to expensive and slow processing.

* lisp/international/mule-util.el (filepos-to-bufferpos)
(bufferpos-to-filepos): Doc fix.  (Bug#25626)
This commit is contained in:
Eli Zaretskii 2017-02-05 21:50:49 +02:00
parent 5e92111268
commit a541c21e86
2 changed files with 3 additions and 3 deletions
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2
doc/lispref/nonascii.texi
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@ -142,7 +142,7 @@ be one of the following:
@table @code
@item exact
The result must be accurate. The function may need to encode and
decode a large part of the buffer.
decode a large part of the buffer, which is expensive and can be slow.
@item approximate
The value can be an approximation. The function may avoid expensive
processing and return an inexact result.

4
lisp/international/mule-util.el
View File

@ -352,7 +352,7 @@ QUALITY can be:
`approximate', in which case we may cut some corners to avoid
excessive work.
`exact', in which case we may end up re-(en/de)coding a large
part of the file/buffer.
part of the file/buffer, this can be expensive and slow.
nil, in which case we may return nil rather than an approximation."
(unless coding-system (setq coding-system buffer-file-coding-system))
(let ((eol (coding-system-eol-type coding-system))
@ -428,7 +428,7 @@ QUALITY can be:
`approximate', in which case we may cut some corners to avoid
excessive work.
`exact', in which case we may end up re-(en/de)coding a large
part of the file/buffer.
part of the file/buffer, this can be expensive and slow.
nil, in which case we may return nil rather than an approximation."
(unless coding-system (setq coding-system buffer-file-coding-system))
(let* ((eol (coding-system-eol-type coding-system))