Patch 8.1.1510
Problem:A plugin cannot easily expand a command like done internally.
Solution: Add the expandcmd() function. (Yegappan Lakshmanan, closes #4514)
Files: runtime/doc/eval.txt, runtime/doc/usr_41.txt, src/evalfunc.c,
src/testdir/test_expand.vim
*** ../vim-8.1.1509/runtime/doc/eval.txt2019-06-09 13:42:36.428522167
+0200
--- runtime/doc/eval.txt2019-06-09 17:06:36.603194124 +0200
***
*** 2325,2330
--- 2326,2332
exp({expr}) Float exponential of {expr}
expand({expr} [, {nosuf} [, {list}]])
any expand special keywords in {expr}
+ expandcmd({expr}) String expand {expr} like with `:edit`
feedkeys({string} [, {mode}]) Number add key sequence to typeahead buffer
filereadable({file}) Number |TRUE| if {file} is a readable file
filewritable({file}) Number |TRUE| if {file} is a writable file
***
*** 4217,4222
--- 4219,4232
See |glob()| for finding existing files. See |system()| for
getting the raw output of an external command.
+ expandcmd({expr}) *expandcmd()*
+ Expand special items in {expr} like what is done for an Ex
+ command such as `:edit`. This expands special keywords, like
+ with |expand()|, and environment variables, anywhere in
+ {expr}. Returns the expanded string.
+ Example: >
+ :echo expandcmd('make %<.o')
+ <
extend({expr1}, {expr2} [, {expr3}]) *extend()*
{expr1} and {expr2} must be both |Lists| or both
|Dictionaries|.
*** ../vim-8.1.1509/runtime/doc/usr_41.txt 2019-05-11 21:14:02.332269584
+0200
--- runtime/doc/usr_41.txt 2019-06-09 17:07:15.550875139 +0200
***
*** 608,619
--- 609,622
strcharpart() get part of a string using char index
strgetchar()get character from a string using char index
expand()expand special keywords
+ expandcmd() expand a command like done for `:edit`
iconv() convert text from one encoding to another
byteidx() byte index of a character in a string
byteidxcomp() like byteidx() but count composing characters
repeat()repeat a string multiple times
eval() evaluate a string expression
execute() execute an Ex command and get the output
+ win_execute() like execute() but in a specified window
trim() trim characters from a string
List manipulation:*list-functions*
***
*** 813,818
--- 816,822
appendbufline() append a list of lines in the specified buffer
deletebufline() delete lines from a specified buffer
listener_add() add a callback to listen to changes
+ listener_flush()invoke listener callbacks
listener_remove() remove a listener callback
win_findbuf() find windows containing a buffer
win_getid() get window ID of a window
*** ../vim-8.1.1509/src/evalfunc.c 2019-06-09 13:42:36.428522167 +0200
--- src/evalfunc.c 2019-06-09 17:14:51.367682702 +0200
***
*** 149,154
--- 149,155
static void f_exp(typval_T *argvars, typval_T *rettv);
#endif
static void f_expand(typval_T *argvars, typval_T *rettv);
+ static void f_expandcmd(typval_T *argvars, typval_T *rettv);
static void f_extend(typval_T *argvars, typval_T *rettv);
static void f_feedkeys(typval_T *argvars, typval_T *rettv);
static void f_filereadable(typval_T *argvars, typval_T *rettv);
***
*** 646,651
--- 647,653
{"exp", 1, 1, f_exp},
#endif
{"expand",1, 3, f_expand},
+ {"expandcmd", 1, 1, f_expandcmd},
{"extend",2, 3, f_extend},
{"feedkeys", 1, 2, f_feedkeys},
{"file_readable", 1, 1, f_filereadable}, /* obsolete */
***
*** 3791,3796
--- 3793,3827
}
/*
+ * "expandcmd()" function
+ * Expand all the special characters in a command string.
+ */
+ static void
+ f_expandcmd(typval_T *argvars, typval_T *rettv)
+ {
+ exarg_T eap;
+ char_u*cmdstr;
+ char *errormsg = NULL;
+
+ rettv->v_type = VAR_STRING;
+ cmdstr = vim_strsave(tv_get_string(&argvars[0]));
+
+ memset(&eap, 0, sizeof(eap));
+ eap.cmd = cmdstr;
+ eap.arg = cmdstr;
+ eap.argt |= NOSPC;
+ eap.usefilter = FALSE;
+ eap.nextcmd = NULL;
+ eap.cmdidx = CMD_USER;
+
+ exp
