[musl] [PATCH] make realpath replace leading // with a single /

[Natanael Copa <ncopa@alpinelinux.org>]

On some systems a leading double slash may have special meaning, so
POSIX[1] says that "If a pathname begins with two successive <slash>
characters, the first component following the leading <slash> characters
may be interpreted in an implementation-defined manner"

While current musl implementation is technically correct, most other
systems' (at least GNU libc, freebsd, openbsd, netbsd macOS)
implementations will replace a leading // with a single /. Make musl
do the same to avoid surprises.

[1]: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13
---
 src/misc/realpath.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/misc/realpath.c b/src/misc/realpath.c
index db8b74dc..414b4741 100644
--- a/src/misc/realpath.c
+++ b/src/misc/realpath.c
@@ -46,9 +46,6 @@ restart:
 			q=0;
 			output[q++] = '/';
 			p++;
-			/* Initial // is special. */
-			if (stack[p] == '/' && stack[p+1] != '/')
-				output[q++] = '/';
 			continue;
 		}
 
-- 
2.30.0