[PATCH v3 0/2] auto detect REG_ILLSEQ

This is a reroll for cb/t4210-illseq-auto-detect that includes all feedback and split on two steps for easy of reviewing.

While the refactoring in test-regex.c is a little more intrusive that needed, makes the logic easier to follow and the different use cases more straightforward.

Note that there is still a leak in the use of regex_t, and had kept all original assumptions for simplicity (no explicit check on REG_ILLSEQ, or unlikely differences between BASIC/EXTENDED).

Carlo Marcelo Arenas Belón (2):
  t/helper: teach test-regex to report pattern errors (like REG_ILLSEQ)
  t4210: detect REG_ILLSEQ dynamically and skip affected tests

 t/helper/test-regex.c | 94 ++++++++++++++++++++++++++++++-------------
 t/t4210-log-i18n.sh   | 77 ++++++++++++++++++++++++++---------
 t/test-lib.sh         |  6 ---
 3 files changed, 125 insertions(+), 52 deletions(-)