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patch 8.1.1610: there is no way to add or load a buffer without side effects

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Problem:    There is no way to add or load a buffer without side effects.
Solution:   Add the bufadd() and bufload() functions.
This commit is contained in:
Bram Moolenaar
2019-06-30 20:21:37 +02:00
parent 2e62b568e9
commit 15e248e37f
4 changed files with 81 additions and 0 deletions
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32
src/evalfunc.c
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@@ -71,8 +71,10 @@ static void f_balloon_split(typval_T *argvars, typval_T *rettv);
#endif
static void f_browse(typval_T *argvars, typval_T *rettv);
static void f_browsedir(typval_T *argvars, typval_T *rettv);
static void f_bufadd(typval_T *argvars, typval_T *rettv);
static void f_bufexists(typval_T *argvars, typval_T *rettv);
static void f_buflisted(typval_T *argvars, typval_T *rettv);
static void f_bufload(typval_T *argvars, typval_T *rettv);
static void f_bufloaded(typval_T *argvars, typval_T *rettv);
static void f_bufname(typval_T *argvars, typval_T *rettv);
static void f_bufnr(typval_T *argvars, typval_T *rettv);
@@ -526,11 +528,13 @@ static struct fst
#endif
{"browse", 4, 4, f_browse},
{"browsedir", 2, 2, f_browsedir},
{"bufadd", 1, 1, f_bufadd},
{"bufexists", 1, 1, f_bufexists},
{"buffer_exists", 1, 1, f_bufexists}, /* obsolete */
{"buffer_name", 1, 1, f_bufname}, /* obsolete */
{"buffer_number", 1, 1, f_bufnr}, /* obsolete */
{"buflisted", 1, 1, f_buflisted},
{"bufload", 1, 1, f_bufload},
{"bufloaded", 1, 1, f_bufloaded},
{"bufname", 1, 1, f_bufname},
{"bufnr", 1, 2, f_bufnr},
@@ -1919,6 +1923,15 @@ find_buffer(typval_T *avar)
return buf;
}
/*
* "bufadd(expr)" function
*/
static void
f_bufadd(typval_T *argvars, typval_T *rettv)
{
rettv->vval.v_number = buflist_add(tv_get_string(&argvars[0]), 0);
}
/*
* "bufexists(expr)" function
*/
@@ -1940,6 +1953,25 @@ f_buflisted(typval_T *argvars, typval_T *rettv)
rettv->vval.v_number = (buf != NULL && buf->b_p_bl);
}
/*
* "bufload(expr)" function
*/
static void
f_bufload(typval_T *argvars, typval_T *rettv UNUSED)
{
buf_T *buf = get_buf_arg(&argvars[0]);
if (buf != NULL && buf->b_ml.ml_mfp == NULL)
{
aco_save_T aco;
aucmd_prepbuf(&aco, buf);
swap_exists_action = SEA_NONE;
open_buffer(FALSE, NULL, 0);
aucmd_restbuf(&aco);
}
}
/*
* "bufloaded(expr)" function
*/