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Fix error message in replace-match for subexpressions

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* src/search.c (Freplace_match): Output a more understandable
error message when replacing a subexpression (bug#19208).
This commit is contained in:
Lars Ingebrigtsen 2019-08-03 16:00:20 +02:00
parent f77a395146
commit 18e163fd34
1 changed files with 6 additions and 0 deletions
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6
src/search.c
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@ -2404,6 +2404,12 @@ since only regular expressions have distinguished subexpressions. */)
args_out_of_range (subexp, make_fixnum (search_regs.num_regs));
}
/* Check whether the subexpression to replace is greater than the
number of subexpressions in the regexp. */
if (sub > 0 && search_regs.start[sub] == -1)
args_out_of_range (build_string ("Attempt to replace regexp subexpression that doesn't exist"),
subexp);
/* Sanity check to see whether the text to replace is present in the
buffer/string. */
if (NILP (string))