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feat(--headless): add on_print callback to stdioopen

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This commit adds an on_print callback to stdioopen's dictionary
argument which lets the caller specify a function called each time
neovim will try to output something to stdout (e.g. on "echo" or
"echoerr" in --headless mode).
This commit is contained in:
glacambre
2021-10-03 16:19:25 +02:00
parent 326e74571b
commit a4069a3eed
5 changed files with 51 additions and 1 deletions
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11
src/nvim/message.c
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@@ -2647,6 +2647,17 @@ static void msg_puts_printf(const char *str, const ptrdiff_t maxlen)
char buf[7];
char *p;
if (on_print.type != kCallbackNone) {
typval_T argv[1];
argv[0].v_type = VAR_STRING;
argv[0].v_lock = VAR_UNLOCKED;
argv[0].vval.v_string = (char_u *)str;
typval_T rettv = TV_INITIAL_VALUE;
callback_call(&on_print, 1, argv, &rettv);
tv_clear(&rettv);
return;
}
while ((maxlen < 0 || s - str < maxlen) && *s != NUL) {
int len = utf_ptr2len((const char_u *)s);
if (!(silent_mode && p_verbose == 0)) {