/*
* Try to include modifiers in the key.
* Changes "Shift-a" to 'A', "Alt-A" to 0xc0, etc.
*/
int extract_modifiers(int key, int *modp)
{
int modifiers = *modp;
if ((modifiers & MOD_MASK_SHIFT) && ASCII_ISALPHA(key)) {
key = TOUPPER_ASC(key);
modifiers &= ~MOD_MASK_SHIFT;
}
if ((modifiers & MOD_MASK_CTRL)
&& ((key >= '?' && key <= '_') || ASCII_ISALPHA(key))
) {
key = Ctrl_chr(key);
modifiers &= ~MOD_MASK_CTRL;
/* <C-@> is <Nul> */
if (key == 0)
key = K_ZERO;
}
if ((modifiers & MOD_MASK_ALT) && key < 0x80
&& !enc_dbcs /* avoid creating a lead byte */
) {
key |= 0x80;
modifiers &= ~MOD_MASK_ALT; /* remove the META modifier */
}
*modp = modifiers;
return key;
}
/*
* Return TRUE if "key" can be used without quotes.
* That is when it starts with a letter and only contains letters, digits and
* underscore.
*/
static int
is_simple_key(char_u *key)
{
char_u *p;
if (!ASCII_ISALPHA(*key))
return FALSE;
for (p = key + 1; *p != NUL; ++p)
if (!ASCII_ISALPHA(*p) && *p != '_' && !vim_isdigit(*p))
return FALSE;
return TRUE;
}
/// Try to include modifiers (except alt/meta) in the key.
/// Changes "Shift-a" to 'A', "Ctrl-@" to <Nul>, etc.
static int extract_modifiers(int key, int *modp)
{
int modifiers = *modp;
if ((modifiers & MOD_MASK_SHIFT) && ASCII_ISALPHA(key)) {
key = TOUPPER_ASC(key);
modifiers &= ~MOD_MASK_SHIFT;
}
if ((modifiers & MOD_MASK_CTRL)
&& ((key >= '?' && key <= '_') || ASCII_ISALPHA(key))) {
key = Ctrl_chr(key);
modifiers &= ~MOD_MASK_CTRL;
if (key == 0) { // <C-@> is <Nul>
key = K_ZERO;
}
}
*modp = modifiers;
return key;
}
