Fix problems with message catalog directory

- In appimage, the message catalog is not used because there is no
  message catalog in LOCALE_INSTALL_DIR. Therefore, change to
  exepath/../share/locale instead of LOCALE_INSTALL_DIR.
- The old vim style($runtime/lang) is no longer used. Thus all relevant
  code is removed.

1 files changed, 2 insertions, 18 deletions

diff --git a/src/nvim/os/env.c b/src/nvim/os/env.c
index b067de608b..871298f415 100644
--- a/src/nvim/os/env.c
+++ b/src/nvim/os/env.c
@@ -805,10 +805,10 @@ char *vim_getenv(const char *name)
   // next time, and others can also use it (e.g. Perl).
   if (vim_path != NULL) {
     if (vimruntime) {
-      vim_setenv("VIMRUNTIME", vim_path);
+      os_setenv("VIMRUNTIME", vim_path, 1);
       didset_vimruntime = true;
     } else {
-      vim_setenv("VIM", vim_path);
+      os_setenv("VIM", vim_path, 1);
       didset_vim = true;
     }
   }
@@ -955,22 +955,6 @@ char_u * home_replace_save(buf_T *buf, char_u *src) FUNC_ATTR_NONNULL_RET
   return dst;
 }
 
-/// Vim setenv() wrapper with special handling for $VIMRUNTIME to keep the
-/// localization machinery sane.
-void vim_setenv(const char *name, const char *val)
-{
-  os_setenv(name, val, 1);
-#ifndef LOCALE_INSTALL_DIR
-  // When setting $VIMRUNTIME adjust the directory to find message
-  // translations to $VIMRUNTIME/lang.
-  if (*val != NUL && STRICMP(name, "VIMRUNTIME") == 0) {
-    char *buf = (char *)concat_str((char_u *)val, (char_u *)"/lang");
-    bindtextdomain(PROJECT_NAME, buf);
-    xfree(buf);
-  }
-#endif
-}
-
 
 /// Function given to ExpandGeneric() to obtain an environment variable name.
 char_u *get_env_name(expand_T *xp, int idx)