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authorEli Zaretskii <[email protected]>2005-05-21 15:28:57 +0000
committerEli Zaretskii <[email protected]>2005-05-21 15:28:57 +0000
commitaa4060b96fc558a2861712ddb051a22c1adef275 (patch)
treef79546ba922ab7bed362b157a92f8868052e51b5 /src/fileio.c
parentbb4afd09189d16c86792843c97309820d3a5a688 (diff)
(Fexpand_file_name) [DOS_NT]: Don't try to support "superroot"
on DOS_NT systems.
Diffstat (limited to 'src/fileio.c')
-rw-r--r--src/fileio.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/src/fileio.c b/src/fileio.c
index 0956fb9d13..4dac185ac8 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -1651,8 +1651,16 @@ See also the function `substitute-in-file-name'. */)
p += 2;
}
else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
- /* `/../' is the "superroot" on certain file systems. */
+ /* `/../' is the "superroot" on certain file systems.
+ Turned off on DOS_NT systems because they have no
+ "superroot" and because this causes us to produce
+ file names like "d:/../foo" which fail file-related
+ functions of the underlying OS. (To reproduce, try a
+ long series of "../../" in default_directory, longer
+ than the number of levels from the root.) */
+#ifndef DOS_NT
&& o != target
+#endif
&& (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
{
while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))