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transform: fix replacement of particular pattern instance

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This fixes handling of expressions like 's/s/@/2'

Fix suggested by Anthony Heading.

* src/transform.c (_single_transform_name_to_obstack): Avoid duplicating
initial prefix if replace is not needed.
This commit is contained in:
Sergey Poznyakoff
2021-08-28 09:13:05 +03:00
parent 93082d6eb8
commit 193eb8f81d
1 changed files with 3 additions and 3 deletions
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6
src/transform.c
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@@ -493,9 +493,6 @@ _single_transform_name_to_obstack (struct transform *tf, char *input)
disp = rmp[0].rm_eo;
if (rmp[0].rm_so)
obstack_grow (&stk, input, rmp[0].rm_so);
nmatches++;
if (tf->match_number && nmatches < tf->match_number)
{
@@ -504,6 +501,9 @@ _single_transform_name_to_obstack (struct transform *tf, char *input)
continue;
}
if (rmp[0].rm_so)
obstack_grow (&stk, input, rmp[0].rm_so);
for (segm = tf->repl_head; segm; segm = segm->next)
{
switch (segm->type)