[Bug 1657318] [NEW] string.Template.substitute cant handle delimiter in replacement string

[Björn Michaelsen]

Public bug reported:

python 3.5.3 as in Zesty cant handle delimiters in the replacement value
properly.

Example:
$ python3.5
>>> from string import Template
>>> Template("$foo $bar").substitute(foo="FOO", bar="$")

Expected result:
'FOO $'

Actual result:
error

This is a regression against at least xenial where this works as
expected.

** Affects: python3.5 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: regression-release

** Tags added: regression-release

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https://bugs.launchpad.net/bugs/1657318

Title:
  string.Template.substitute cant handle delimiter in replacement string

Status in python3.5 package in Ubuntu:
  New

Bug description:
  python 3.5.3 as in Zesty cant handle delimiters in the replacement
  value properly.

  Example:
  $ python3.5
  >>> from string import Template
  >>> Template("$foo $bar").substitute(foo="FOO", bar="$")

  Expected result:
  'FOO $'

  Actual result:
  error

  This is a regression against at least xenial where this works as
  expected.

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