Mercurial > vim
changeset 21905:2474c6b0c5de v8.2.1502
patch 8.2.1502: Vim9: can use += with a :let command at script level
Commit: https://github.com/vim/vim/commit/122616d9c1b57f1e1f29f1151f8e26d24df9092a
Author: Bram Moolenaar <Bram@vim.org>
Date: Fri Aug 21 21:32:50 2020 +0200
patch 8.2.1502: Vim9: can use += with a :let command at script level
Problem: Vim9: can use += with a :let command at script level.
Solution: Give an error.
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Fri, 21 Aug 2020 21:45:04 +0200 |
| parents | a0088959f40a |
| children | b81818d441f7 |
| files | src/evalvars.c src/testdir/test_vim9_expr.vim src/testdir/test_vim9_script.vim src/version.c |
| diffstat | 4 files changed, 13 insertions(+), 4 deletions(-) [+] |
line wrap: on
line diff
--- a/src/evalvars.c +++ b/src/evalvars.c @@ -786,7 +786,13 @@ ex_let(exarg_T *eap) op[1] = NUL; if (*expr != '=') { - if (vim_strchr((char_u *)"+-*/%.", *expr) != NULL) + if (vim9script && (flags & LET_NO_COMMAND) == 0) + { + // +=, /=, etc. require an existing variable + semsg(_(e_cannot_use_operator_on_new_variable), eap->arg); + i = FAIL; + } + else if (vim_strchr((char_u *)"+-*/%.", *expr) != NULL) { op[0] = *expr; // +=, -=, *=, /=, %= or .= ++len;
--- a/src/testdir/test_vim9_expr.vim +++ b/src/testdir/test_vim9_expr.vim @@ -1682,8 +1682,6 @@ def Test_expr7_dict() call CheckDefFailure(["let x = {xxx: 8}"], 'E1001:', 1) call CheckDefFailure(["let x = #{a: 1, a: 2}"], 'E721:', 1) call CheckDefFailure(["let x = #"], 'E1015:', 1) - call CheckDefFailure(["let x += 1"], 'E1020:', 1) - call CheckDefFailure(["let x = x + 1"], 'E1001:', 1) call CheckDefExecFailure(["let x = g:anint.member"], 'E715:', 1) call CheckDefExecFailure(["let x = g:dict_empty.member"], 'E716:', 1)
--- a/src/testdir/test_vim9_script.vim +++ b/src/testdir/test_vim9_script.vim @@ -569,7 +569,10 @@ def Test_assignment_failure() call CheckDefFailure(['let t:var = 5'], 'E1016: Cannot declare a tab variable:') call CheckDefFailure(['let anr = 4', 'anr ..= "text"'], 'E1019:') - call CheckDefFailure(['let xnr += 4'], 'E1020:') + call CheckDefFailure(['let xnr += 4'], 'E1020:', 1) + call CheckScriptFailure(['vim9script', 'let xnr += 4'], 'E1020:') + call CheckDefFailure(["let xnr = xnr + 1"], 'E1001:', 1) + call CheckScriptFailure(['vim9script', 'let xnr = xnr + 4'], 'E121:') call CheckScriptFailure(['vim9script', 'def Func()', 'let dummy = s:notfound', 'enddef', 'defcompile'], 'E1108:')