Patrick Steinhardt <ps@xxxxxx> writes: > We use printf to set up sections with GitLab CI, which requires us to > print a bunch of escape sequences via printf. The group name is > controlled by the user and is expanded directly into the formatting > string, which may cause problems in case the argument controls escape > sequences or formatting directives. Could it be you mean "contains" instead of "controls"? > > Fix this potential issue by using formatting directives to pass variable > data. > > Signed-off-by: Patrick Steinhardt <ps@xxxxxx> > --- > ci/lib.sh | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/ci/lib.sh b/ci/lib.sh > index a54601be923bf475ba1a9cafd98bb1cb71a10255..f15f77f03a06120afbee438cee76ddc2683e1fa2 100755 > --- a/ci/lib.sh > +++ b/ci/lib.sh > @@ -18,7 +18,7 @@ elif test true = "$GITLAB_CI" > then > begin_group () { > need_to_end_group=t > - printf "\e[0Ksection_start:$(date +%s):$(echo "$1" | tr ' ' _)[collapsed=true]\r\e[0K$1\n" > + printf '\e[0Ksection_start:%s:%s[collapsed=true]\r\e[0K%s\n' "$(date +%s)" "$(echo "$1" | tr ' ' _)" "$1" Personally I find this line rather lengthy and hard to read with all the single and double quotes. So I would suggest to split the line with a backslash and put the arguments on a separate line. But I don't think there's a general guideline on this, so feel free to ignore. > trap "end_group '$1'" EXIT > set -x > } > @@ -27,7 +27,7 @@ then > test -n "$need_to_end_group" || return 0 > set +x > need_to_end_group= > - printf "\e[0Ksection_end:$(date +%s):$(echo "$1" | tr ' ' _)\r\e[0K\n" > + printf '\e[0Ksection_end:%s:%s\r\e[0K\n' "$(date +%s)" "$(echo "$1" | tr ' ' _)" Same here. But that's all I've got on this patch series. Looking good! -- Toon