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patch 8.2.2806: Vim9: using "++nr" as a command might not work

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Problem:    Vim9: using "++nr" as a command might not work.
Solution:   Do not recognize "++" and "--" in a following line as addition or
            subtraction.
This commit is contained in:
Bram Moolenaar
2021-04-24 19:08:24 +02:00
parent 96cf4ba8fb
commit bdc0f1c698
10 changed files with 97 additions and 27 deletions
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3
src/eval.c
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@@ -2856,12 +2856,15 @@ eval5(char_u **arg, typval_T *rettv, evalarg_T *evalarg)
// "." is only string concatenation when scriptversion is 1
// "+=", "-=" and "..=" are assignments
// "++" and "--" on the next line are a separate command.
p = eval_next_non_blank(*arg, evalarg, &getnext);
op = *p;
concat = op == '.' && (*(p + 1) == '.' || current_sctx.sc_version < 2);
if ((op != '+' && op != '-' && !concat) || p[1] == '='
|| (p[1] == '.' && p[2] == '='))
break;
if (getnext && (op == '+' || op == '-') && p[0] == p[1])
break;
evaluate = evalarg == NULL ? 0 : (evalarg->eval_flags & EVAL_EVALUATE);
oplen = (concat && p[1] == '.') ? 2 : 1;