[PostGIS] #5092: Stop filling up the disk with upgrade scripts

[PostGIS]

#5092: Stop filling up the disk with upgrade scripts
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  Reporter:  strk          |      Owner:  strk
      Type:  enhancement   |     Status:  new
  Priority:  medium        |  Milestone:  PostGIS PostgreSQL
 Component:  upgrade/soft  |    Version:  master
Resolution:                |   Keywords:
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Comment (by strk):

 For the record, the code, updated to current master branch of PostgreSQL,
 is here:
 https://git.osgeo.org/gitea/strk/postgresql/src/branch/extension-upgrade-
 wildcard
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5092#comment:10>
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