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vim-patch:8.2.4667: expandcmd() fails on an error

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Problem:    expandcmd() fails on an error.
Solution:   On failure return the command unmodified. (yegappan Lakshmanan,
            closes vim/vim#10063)
5018a836c0
This commit is contained in:
zeertzjq 2022-08-20 06:51:06 +08:00
parent 6d6e9c5d51
commit 15ca01b649
3 changed files with 25 additions and 16 deletions
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7
runtime/doc/builtin.txt
View File

@ -2074,10 +2074,13 @@ expandcmd({string}) *expandcmd()*
like with |expand()|, and environment variables, anywhere in
{string}. "~user" and "~/path" are only expanded at the
start.
Returns the expanded string. Example: >
Returns the expanded string. If an error is encountered
during expansion, the unmodified {string} is returned.
Example: >
:echo expandcmd('make %<.o')
< make /path/runtime/doc/builtin.o ~
< Can also be used as a |method|: >
Can also be used as a |method|: >
GetCommand()->expandcmd()
<
extend({expr1}, {expr2} [, {expr3}]) *extend()*

6
src/nvim/eval/funcs.c
View File

@ -2052,10 +2052,10 @@ static void f_expandcmd(typval_T *argvars, typval_T *rettv, FunPtr fptr)
};
eap.argt |= EX_NOSPC;
emsg_off++;
expand_filename(&eap, &cmdstr, &errormsg);
if (errormsg != NULL && *errormsg != NUL) {
emsg(errormsg);
}
emsg_off--;
rettv->vval.v_string = cmdstr;
}

28
src/nvim/testdir/test_expand.vim
View File

@ -78,10 +78,11 @@ func Test_expandcmd()
edit a1a2a3.rb
call assert_equal('make b1b2b3.rb a1a2a3 Xfile.o', expandcmd('make %:gs?a?b? %< #<.o'))
call assert_fails('call expandcmd("make <afile>")', 'E495:')
call assert_fails('call expandcmd("make <afile>")', 'E495:')
call assert_equal('make <afile>', expandcmd("make <afile>"))
call assert_equal('make <amatch>', expandcmd("make <amatch>"))
call assert_equal('make <abuf>', expandcmd("make <abuf>"))
enew
call assert_fails('call expandcmd("make %")', 'E499:')
call assert_equal('make %', expandcmd("make %"))
let $FOO="blue\tsky"
call setline(1, "$FOO")
call assert_equal("grep pat blue\tsky", expandcmd('grep pat <cfile>'))
@ -94,6 +95,11 @@ func Test_expandcmd()
let $FOO= "foo bar baz"
call assert_equal("e foo bar baz", expandcmd("e $FOO"))
if has('unix')
" test for using the shell to expand a command argument
call assert_equal('{1..4}', expandcmd('{1..4}'))
endif
unlet $FOO
close!
endfunc
@ -101,14 +107,14 @@ endfunc
" Test for expanding <sfile>, <slnum> and <sflnum> outside of sourcing a script
func Test_source_sfile()
let lines =<< trim [SCRIPT]
:call assert_fails('echo expandcmd("<sfile>")', 'E498:')
:call assert_fails('echo expandcmd("<slnum>")', 'E842:')
:call assert_fails('echo expandcmd("<sflnum>")', 'E961:')
:call assert_fails('call expandcmd("edit <cfile>")', 'E446:')
:call assert_fails('call expandcmd("edit #")', 'E194:')
:call assert_fails('call expandcmd("edit #<2")', 'E684:')
:call assert_fails('call expandcmd("edit <cword>")', 'E348:')
:call assert_fails('call expandcmd("edit <cexpr>")', 'E348:')
:call assert_equal('<sfile>', expandcmd("<sfile>"))
:call assert_equal('<slnum>', expandcmd("<slnum>"))
:call assert_equal('<sflnum>', expandcmd("<sflnum>"))
:call assert_equal('edit <cfile>', expandcmd("edit <cfile>"))
:call assert_equal('edit #', expandcmd("edit #"))
:call assert_equal('edit #<2', expandcmd("edit #<2"))
:call assert_equal('edit <cword>', expandcmd("edit <cword>"))
:call assert_equal('edit <cexpr>', expandcmd("edit <cexpr>"))
:call assert_fails('autocmd User MyCmd echo "<sfile>"', 'E498:')
:call writefile(v:errors, 'Xresult')
:qall!