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patch 8.2.2290: Vim9: unlet of global variable cannot be compiled

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Problem:    Vim9: unlet of global variable cannot be compiled.
Solution:   Skip over variables that might be defined later. Give an error if
            a subscript is found. (closes #7585)
This commit is contained in:
Bram Moolenaar
2021-01-03 20:55:26 +01:00
parent e5a2dc87fd
commit 2ef951dd31
5 changed files with 26 additions and 3 deletions
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12
src/vim9compile.c
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@@ -6130,6 +6130,12 @@ compile_unlet(
// Normal name. Only supports g:, w:, t: and b: namespaces.
*name_end = NUL;
if (vim_strchr(p, '.') != NULL || vim_strchr(p, '[') != NULL)
{
*name_end = cc;
goto failed;
}
if (*p == '$')
ret = generate_UNLET(cctx, ISN_UNLETENV, p + 1, eap->forceit);
else if (check_vim9_unlet(p) == FAIL)
@@ -6141,8 +6147,11 @@ compile_unlet(
return ret;
}
failed:
// TODO: unlet {list}[idx]
// TODO: unlet {dict}[key]
// complication: {list} can be global while "idx" is local, thus we can't
// call ex_unlet().
emsg("Sorry, :unlet not fully implemented yet");
return FAIL;
}
@@ -6163,7 +6172,8 @@ compile_unletlock(char_u *arg, exarg_T *eap, cctx_T *cctx)
}
// TODO: this doesn't work for local variables
ex_unletlock(eap, p, 0, GLV_NO_AUTOLOAD, compile_unlet, cctx);
ex_unletlock(eap, p, 0, GLV_NO_AUTOLOAD | GLV_COMPILING,
compile_unlet, cctx);
return eap->nextcmd == NULL ? (char_u *)"" : eap->nextcmd;
}