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Diffstat (limited to 'lispref/files.texi')
| -rw-r--r-- | lispref/files.texi | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lispref/files.texi b/lispref/files.texi index f357b1f3814..656dbf346dc 100644 --- a/lispref/files.texi +++ b/lispref/files.texi @@ -1990,6 +1990,20 @@ canonical form: @end group @end example +In some cases, a leading @samp{..} component can remain in the output: + +@example +@group +(expand-file-name "../home" "/") + @result{} "/../home" +@end group +@end example + +@noindent +This is for the sake of filesystems that have the concept of a +``superroot'' above the root directory @file{/}. On other filesystems, +@file{/../} is interpreted exactly the same as @file{/}. + Note that @code{expand-file-name} does @emph{not} expand environment variables; only @code{substitute-in-file-name} does that. |