---
- branch: MAIN
  date: Sat Apr 18 12:21:11 UTC 2020
  files:
  - new: '1.77'
    old: '1.76'
    path: pkgsrc/mk/subst.mk
    pathrev: pkgsrc/mk/subst.mk@1.77
    type: modified
  - new: '1.16'
    old: '1.15'
    path: pkgsrc/regress/infra-unittests/subst.sh
    pathrev: pkgsrc/regress/infra-unittests/subst.sh@1.16
    type: modified
  id: 20200418T122111Z.349e0d38d27c4c18a1727931f089db33a770be4b
  log: |
    mk/subst.mk: avoid undefined behavior in regular expressions

    https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html
    says in section 9.3.2 BRE Ordinary Characters that only very few
    characters may be preceded with a backslash.

    As a side effect, this change allows parentheses in the variable names
    listed in SUBST_VARS (even if that will never happen in practice).

    The reason that the regression test had not replaced VAR.[] before was
    simply that this variable had not been listed in SUBST_VARS.
  module: pkgsrc
  subject: 'CVS commit: pkgsrc'
  unixtime: '1587212471'
  user: rillig