print where and when cr_hascontrollchars is true

[sergiomb2]

Relates to issue #424.

tested with packages https://download.copr.fedorainfracloud.org/archive/issues/copr-3163/ , as referenced
fedora-copr/copr#3163

now I got (as expected) these lines [1] the problem on nodejs-electron.spec was here [2]

[1]
createrepo_c .

Directory walk started
Directory walk done - 5 packages
Temporary output repo path: ./.repodata/
Pool started (with 5 workers)
Package RPM license AFL-2.0 AND Apache-2.0 AND blessing AND BSD-2-Clause AND BSD-3-Clause AND BSD-Protection AND BSD-Source-Code AND bzip2-1.0.6 AND IJG AND ISC AND LGPL-2.0-or-later AND LGPL-2.1-or-later AND MIT AND MIT-CMU AND MIT-open-group AND (MPL-1.1 OR GPL-2.0-or-later OR LGPL-2.1-or-later) AND MPL-2.0 AND OpenSSL AND SGI-B-2.0 AND SUSE-Public-Domain AND X11 AND Zlib contains forbidden control chars (ASCII values <32 except 9, 10 and 13).
C_CREATEREPOLIB: Critical: Cannot dump XML for nodejs-electron-devel (b5373d44fd0b922cf7b43bb27ad39b9c0878ce44edb12959b9915b1849a8e0f3): Forbidden control chars found (ASCII values <32 except 9, 10 and 13).
Package RPM license AFL-2.0 AND Apache-2.0 AND blessing AND BSD-2-Clause AND BSD-3-Clause AND BSD-Protection AND BSD-Source-Code AND bzip2-1.0.6 AND IJG AND ISC AND LGPL-2.0-or-later AND LGPL-2.1-or-later AND MIT AND MIT-CMU AND MIT-open-group AND (MPL-1.1 OR GPL-2.0-or-later OR LGPL-2.1-or-later) AND MPL-2.0 AND OpenSSL AND SGI-B-2.0 AND SUSE-Public-Domain AND X11 AND Zlib contains forbidden control chars (ASCII values <32 except 9, 10 and 13).
C_CREATEREPOLIB: Critical: Cannot dump XML for nodejs-electron-doc (6551f31fd59ced0f6832fefce64a94deb9230dae3b74a871311e1b1d71a4a635): Forbidden control chars found (ASCII values <32 except 9, 10 and 13).
Package RPM license AFL-2.0 AND Apache-2.0 AND blessing AND BSD-2-Clause AND BSD-3-Clause AND BSD-Protection AND BSD-Source-Code AND bzip2-1.0.6 AND IJG AND ISC AND LGPL-2.0-or-later AND LGPL-2.1-or-later AND MIT AND MIT-CMU AND MIT-open-group AND (MPL-1.1 OR GPL-2.0-or-later OR LGPL-2.1-or-later) AND MPL-2.0 AND OpenSSL AND SGI-B-2.0 AND SUSE-Public-Domain AND X11 AND Zlib contains forbidden control chars (ASCII values <32 except 9, 10 and 13).
C_CREATEREPOLIB: Critical: Cannot dump XML for nodejs-electron (6cf2159a44f86310c430292ceaa231a71f07eda8590f2507ab884771d0f5ade8): Forbidden control chars found (ASCII values <32 except 9, 10 and 13).
Package RPM license AFL-2.0 AND Apache-2.0 AND blessing AND BSD-2-Clause AND BSD-3-Clause AND BSD-Protection AND BSD-Source-Code AND bzip2-1.0.6 AND IJG AND ISC AND LGPL-2.0-or-later AND LGPL-2.1-or-later AND MIT AND MIT-CMU AND MIT-open-group AND (MPL-1.1 OR GPL-2.0-or-later OR LGPL-2.1-or-later) AND MPL-2.0 AND OpenSSL AND SGI-B-2.0 AND SUSE-Public-Domain AND X11 AND Zlib contains forbidden control chars (ASCII values <32 except 9, 10 and 13).
C_CREATEREPOLIB: Critical: Cannot dump XML for nodejs-electron (9584d3fed1bde5062f19bbedb20081cbe96dc7f10f92e0c22821d9a1e2969af0): Forbidden control chars found (ASCII values <32 except 9, 10 and 13).
Pool finished with errors
Warning: There were some invalid packages: we have to recompress other, filelists and primary xml metadata files in order to have correct package counts

[2]

%define AndZlib %{quote: AND Zlib}
License:        AFL-2.0 AND Apache-2.0 AND blessing AND BSD-2-Clause AND BSD-3-Clause AND BSD-Protection AND BSD-Source-Code AND bzip2-1.0.6 AND IJG AND ISC AND LGPL-2.0-or-later AND LGPL-2.1-or-later AND MIT AND MIT-CMU AND MIT-open-group AND (MPL-1.1 OR GPL-2.0-or-later OR LGPL-2.1-or-later) AND MPL-2.0 AND OpenSSL AND SGI-B-2.0 AND SUSE-Public-Domain AND X11%{AndZlib}

[ppisar]

This is a very minimal fix. My idea was reporting an exact offset in the strings, and reporting it up instead of printing it directly. I do not want to burden you with my maximal idea.

I will accept this patch, but please change the commit message so it's phrased as an "partial fix". I'd like to keep the issue open and supplement it with a proper fix later.

[sergiomb2]

sure, let me know if it is all right now.