[PATCH] cygwin: Convert paths for html help from posix to windows

["Björn Steinbrink" <B.Steinbrink@gmx.de>]

When using "git help --web" with cygwin, we used to pass the posix path
to the browser, but a native windows browser will expect a windows path
and is unable to make use of the given path.

So the cygwin port gets its own open_html implementation that handles
the path conversion.

Reported-by: Steffen Jaeckel <jaeckel@stzedn.de>
Tested-by: Steffen Jaeckel <jaeckel@stzedn.de>

Signed-off-by: Björn Steinbrink <B.Steinbrink@gmx.de>
---
OK, I don't really know if this is the right way to do it. Maybe when
the browser was built for cygwin this breaks? I have no clue, it's
admittedly just the result of a quick glance at the code and some
googling to find the "right" cygwin function... :-/

 compat/cygwin.c |    7 +++++++
 compat/cygwin.h |    3 +++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/compat/cygwin.c b/compat/cygwin.c
index ebac148..70ecd2d 100644
--- a/compat/cygwin.c
+++ b/compat/cygwin.c
@@ -141,3 +141,10 @@ static int cygwin_lstat_stub(const char *file_name, struct stat *buf)
 stat_fn_t cygwin_stat_fn = cygwin_stat_stub;
 stat_fn_t cygwin_lstat_fn = cygwin_lstat_stub;
 
+void cygwin_open_html(const char *unixpath)
+{
+	char cygpath[PATH_MAX];
+
+	cygwin_conv_to_win32_path(unixpath, cygpath);
+	execl_git_cmd("web--browse", "-c", "help.browser", cygpath, NULL);
+}
diff --git a/compat/cygwin.h b/compat/cygwin.h
index a3229f5..7cbefea 100644
--- a/compat/cygwin.h
+++ b/compat/cygwin.h
@@ -7,3 +7,6 @@ extern stat_fn_t cygwin_lstat_fn;
 
 #define stat(path, buf) (*cygwin_stat_fn)(path, buf)
 #define lstat(path, buf) (*cygwin_lstat_fn)(path, buf)
+
+void cygwin_open_html(const char *path);
+#define open_html cygwin_open_html
-- 
1.6.1.230.gf873d