diff options
Diffstat (limited to 'src/ex_cmds2.c')
| -rw-r--r-- | src/ex_cmds2.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c index 9a23f82055..3a4bce8a26 100644 --- a/src/ex_cmds2.c +++ b/src/ex_cmds2.c @@ -5359,6 +5359,16 @@ gettext_lang(char_u *name) #if defined(FEAT_MULTI_LANG) || defined(PROTO) /* + * Return TRUE when "lang" starts with a valid language name. + * Rejects NULL, empty string, "C", "C.UTF-8" and others. + */ + static int +is_valid_mess_lang(char_u *lang) +{ + return lang != NULL && ASCII_ISALPHA(lang[0]) && ASCII_ISALPHA(lang[1]); +} + +/* * Obtain the current messages language. Used to set the default for * 'helplang'. May return NULL or an empty string. */ @@ -5379,17 +5389,17 @@ get_mess_lang(void) # endif # else p = mch_getenv((char_u *)"LC_ALL"); - if (p == NULL || *p == NUL) + if (!is_valid_mess_lang(p)) { p = mch_getenv((char_u *)"LC_MESSAGES"); - if (p == NULL || *p == NUL) + if (!is_valid_mess_lang(p)) p = mch_getenv((char_u *)"LANG"); } # endif # ifdef WIN32 p = gettext_lang(p); # endif - return p; + return is_valid_mess_lang(p) ? p : NULL; } #endif |