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Date Submitted

Last Update

0014193

CMake

public

2013-06-04 01:54

2013-11-04 09:33

Reporter

Yichao Yu

Assigned To

Priority

normal

Severity

minor

Reproducibility

always

Status

closed

Resolution

won't fix

Platform

Linux

Arch Linux

OS Version

Product Version

CMake 2.8.11

Target Version

Fixed in Version

Summary

0014193: get_filename_component(ABSOLUTE) doesn't remove multiple leading /

Description

When given a path with multiple leading /'s, get_filename_component returns a filename with two leading /'s.
Although this behavior is consistent with how cd set PWD (see 8.c of cd(1)[1]), it doesn't consistent with realpath(1) and realpath(3). And it also makes it harder to use this absolute path as an unique identifier of the file directly. Non-posix shell like zsh(1) also removes multiple leading /'s in PWD and I personally don't see any advantage of not removing them.

The same thing applies to get_filename_component(REALPATH) when a not-yet-exists path is given. (probably related to 0014192.)

[1] http://pubs.opengroup.org/onlinepubs/9699919799/utilities/cd.html [^]

Steps To Reproduce

get_filename_component(abs_path "//lib" ABSOLUTE)
message("${abs_path}")

expected output:
/lib

actual output:
//lib

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Notes
(0033222) Brad King (manager) 2013-06-04 08:08	Two leading slashes is a valid network path prefix: //machine/share/... so they cannot be stripped.

(0034360) Robert Maynard (manager) 2013-11-04 09:33	Closing resolved issues that have not been updated in more than 4 months.

Issue History
Date Modified	Username	Field	Change
2013-06-04 01:54	Yichao Yu	New Issue
2013-06-04 08:08	Brad King	Note Added: 0033222
2013-06-04 08:08	Brad King	Status	new => resolved
2013-06-04 08:08	Brad King	Resolution	open => won't fix
2013-11-04 09:33	Robert Maynard	Note Added: 0034360
2013-11-04 09:33	Robert Maynard	Status	resolved => closed