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patch 8.0.0450: v:progpath is not reliably set

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Problem:    v:progpath is not reliably set.
Solution:   Read /proc/self/exe if possible. (idea by Michal Grochmal)
            Also fixes missing #if.
This commit is contained in:
Bram Moolenaar
2017-03-12 18:38:02 +01:00
parent abb4d5f73f
commit 47ffb905f3
3 changed files with 18 additions and 2 deletions
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15
src/main.c
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@@ -3539,16 +3539,27 @@ set_progpath(char_u *argv0)
{
char_u *val = argv0;
# ifdef HAVE_PROC_SELF_EXE
char buf[PATH_MAX + 1];
ssize_t len;
len = readlink("/proc/self/exe", buf, PATH_MAX);
if (len > 0)
{
buf[len] = NUL;
val = (char_u *)buf;
}
# else
/* A relative path containing a "/" will become invalid when using ":cd",
* turn it into a full path.
* On MS-Windows "vim" should be expanded to "vim.exe", thus always do
* this. */
# ifdef WIN32
# ifdef WIN32
char_u *path = NULL;
if (mch_can_exe(argv0, &path, FALSE) && path != NULL)
val = path;
# else
# else
char_u buf[MAXPATHL];
if (!mch_isFullName(argv0))