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patch 9.0.0449: there is no easy way to translate a key code into a string

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Problem:    There is no easy way to translate a string with a key code into a
            readable string.
Solution:   Add the keytrans() function. (closes #11114)
This commit is contained in:
zeertzjq
2022-09-12 13:38:41 +01:00
committed by Bram Moolenaar
parent 5a4eb55122
commit cdc839353f
9 changed files with 83 additions and 15 deletions
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20
src/message.c
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@@ -1759,7 +1759,7 @@ msg_outtrans_special(
++str;
}
else
text = (char *)str2special(&str, from);
text = (char *)str2special(&str, from, FALSE);
if (text[0] != NUL && text[1] == NUL)
// single-byte character or illegal byte
text = (char *)transchar_byte((char_u)text[0]);
@@ -1782,14 +1782,16 @@ msg_outtrans_special(
char_u *
str2special_save(
char_u *str,
int is_lhs) // TRUE for lhs, FALSE for rhs
int replace_spaces, // TRUE to replace " " with "<Space>".
// used for the lhs of mapping and keytrans().
int replace_lt) // TRUE to replace "<" with "<lt>".
{
garray_T ga;
char_u *p = str;
ga_init2(&ga, 1, 40);
while (*p != NUL)
ga_concat(&ga, str2special(&p, is_lhs));
ga_concat(&ga, str2special(&p, replace_spaces, replace_lt));
ga_append(&ga, NUL);
return (char_u *)ga.ga_data;
}
@@ -1804,7 +1806,9 @@ str2special_save(
char_u *
str2special(
char_u **sp,
int from) // TRUE for lhs of mapping
int replace_spaces, // TRUE to replace " " with "<Space>".
// used for the lhs of mapping and keytrans().
int replace_lt) // TRUE to replace "<" with "<lt>".
{
int c;
static char_u buf[7];
@@ -1861,8 +1865,10 @@ str2special(
*sp = str + (*str == NUL ? 0 : 1);
// Make special keys and C0 control characters in <> form, also <M-Space>.
// Use <Space> only for lhs of a mapping.
if (special || c < ' ' || (from && c == ' '))
if (special
|| c < ' '
|| (replace_spaces && c == ' ')
|| (replace_lt && c == '<'))
return get_special_key_name(c, modifiers);
buf[0] = c;
buf[1] = NUL;
@@ -1880,7 +1886,7 @@ str2specialbuf(char_u *sp, char_u *buf, int len)
*buf = NUL;
while (*sp)
{
s = str2special(&sp, FALSE);
s = str2special(&sp, FALSE, FALSE);
if ((int)(STRLEN(s) + STRLEN(buf)) < len)
STRCAT(buf, s);
}