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patch 9.0.0285: it is not easy to change the command line from a plugin

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Problem:    It is not easy to change the command line from a plugin.
Solution:   Add setcmdline(). (Shougo Matsushita, closes #10869)
This commit is contained in:
Shougo Matsushita
2022-08-27 12:22:25 +01:00
committed by Bram Moolenaar
parent 5ff595d9db
commit 07ea5f1509
8 changed files with 134 additions and 11 deletions
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58
src/ex_getln.c
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@@ -4211,6 +4211,35 @@ f_getcmdscreenpos(typval_T *argvars UNUSED, typval_T *rettv)
rettv->vval.v_number = get_cmdline_screen_pos() + 1;
}
// Set the command line str to "str".
// Returns 1 when failed, 0 when OK.
int
set_cmdline_str(char_u *str, int pos)
{
cmdline_info_T *p = get_ccline_ptr();
int cmdline_type;
int len;
if (p == NULL)
return 1;
len = (int)STRLEN(str);
realloc_cmdbuff(len + 1);
p->cmdlen = len;
STRCPY(p->cmdbuff, str);
p->cmdpos = pos < 0 || pos > p->cmdlen ? p->cmdlen : pos;
new_cmdpos = p->cmdpos;
redrawcmd();
// Trigger CmdlineChanged autocommands.
cmdline_type = ccline.cmdfirstc == NUL ? '-' : ccline.cmdfirstc;
trigger_cmd_autocmd(cmdline_type, EVENT_CMDLINECHANGED);
return 0;
}
/*
* Set the command line byte position to "pos". Zero is the first position.
* Only works when the command line is being edited.
@@ -4234,6 +4263,35 @@ set_cmdline_pos(
return 0;
}
// "setcmdline()" function
void
f_setcmdline(typval_T *argvars, typval_T *rettv)
{
int pos = -1;
if (argvars[0].v_type != VAR_STRING || argvars[0].vval.v_string == NULL)
{
emsg(_(e_string_required));
return;
}
if (argvars[1].v_type != VAR_UNKNOWN)
{
int error = FALSE;
pos = (int)tv_get_number_chk(&argvars[1], &error) - 1;
if (error)
return;
if (pos < 0)
{
emsg(_(e_argument_must_be_positive));
return;
}
}
rettv->vval.v_number = set_cmdline_str(argvars[0].vval.v_string, pos);
}
/*
* "setcmdpos()" function
*/