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vim-patch:8.1.0512: 'helplang' default is inconsistent for C and C.UTF-8

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Problem:    'helplang' default is inconsistent for C and C.UTF-8.
Solution:   Don't accept a value unless it starts with two letters.
389ab7122b
This commit is contained in:
Jan Edmund Lazo 2018-11-05 20:40:32 -05:00
parent bd6866f90b
commit e0d6894a54
1 changed files with 9 additions and 4 deletions
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13
src/nvim/ex_cmds2.c
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@ -3506,7 +3506,12 @@ static char *get_locale_val(int what)
}
#endif
// Return true when "lang" starts with a valid language name.
// Rejects NULL, empty string, "C", "C.UTF-8" and others.
static bool is_valid_mess_lang(char *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.
@ -3526,14 +3531,14 @@ char *get_mess_lang(void)
# endif
# else
p = os_getenv("LC_ALL");
if (p == NULL) {
if (!is_valid_mess_lang(p)) {
p = os_getenv("LC_MESSAGES");
if (p == NULL) {
if (!is_valid_mess_lang(p)) {
p = os_getenv("LANG");
}
}
# endif
return p;
return is_valid_mess_lang(p) ? p : NULL;
}
// Complicated #if; matches with where get_mess_env() is used below.