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(Random Access): In truncate-file, tweak wording for

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clarity, note cannot always extend file this way.
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Kevin Ryde 2006-09-26 01:26:21 +00:00
parent 76557947d8
commit a135bc973d
1 changed files with 12 additions and 8 deletions
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20
doc/ref/api-io.texi
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@ -390,14 +390,18 @@ Return an integer representing the current position of
@findex truncate @findex truncate
@findex ftruncate @findex ftruncate
@deffn {Scheme Procedure} truncate-file object [length] @deffn {Scheme Procedure} truncate-file file [length]
@deffnx {C Function} scm_truncate_file (object, length) @deffnx {C Function} scm_truncate_file (file, length)
Truncates the object referred to by @var{object} to at most Truncate @var{file} to @var{length} bytes. @var{file} can be a
@var{length} bytes. @var{object} can be a string containing a filename string, a port object, or an integer file descriptor. The
file name or an integer file descriptor or a port. return value is unspecified.
@var{length} may be omitted if @var{object} is not a file name,
in which case the truncation occurs at the current port For a port or file descriptor @var{length} can be omitted, in which
position. The return value is unspecified. case the file is truncated at the current position (per @code{ftell}
above).
On most systems a file can be extended by giving a length greater than
the current size, but this is not mandatory in the POSIX standard.
@end deffn @end deffn
@node Line/Delimited @node Line/Delimited