SUMMARY *** I downloaded an album from this website below. I converted the album to opus format. The filenames have track numbers with letters on purpose like b01 and 07a. I used the totag command to tag the track numbers, but files that have track numbers with letters are not tagged. Tracklist also below that have letters http://snesmusic.org/v2/profile.php?set&selected=1733 I c(n *** STEPS TO REPRODUCE 1. kid3-cli -c "totag '%{track}'" b01.opus 2. 3. OBSERVED RESULT kid3-cli -c get b01.opus Tag 2: Vorbis EXPECTED RESULT kid3-cli -c get b01.opus Tag 2: Vorbis Track Number b01 SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
Let's take for example a file named "02a Story.opus". If you open it with kid3-qt (which shares the configuration with kid3-cli which is used in your case), and click "To: Tag 2", nothing happens. The reason is that the format, which is in the control "Format: <arrow down>" at the left of the "To: Tag 2" button, is "%{artist} - %{album}/%{track} %{title}", and this will be transformed into a regular expression containing "(\d{1,4})" to capture the track. For details, look into the handbook at https://docs.kde.org/trunk5/en/kid3/kid3/commands.html#file, the section starting with "Internally, a regular expression". Since "\d{1,4}" only matches one to four digits, you will have to change it or add a new format which explicitly sets the regular expression captures, e.g. %{artist}([^-_\\./ ](?:[^/]*[^-_/ ])?) - %{album}([^-_\\./ ](?:[^/]*[^-_/ ])?)/%{track}([A-Za-z]?\d+[A-Za-z]?) %{title}([^-_\\./ ](?:[^/]*[^-_/ ])?) You can change the existing format in the control, or you can add a new one in "Tag from filename..." in the "Format" section of the "Files" tab in the settings, and then select this format in the "Format: <arrow down>" combo box. Note that this format only matches, if the tracks are in a folder with format "artist - album". If this is not the case, you could use only the part with track and title: /%{track}([A-Za-z]?\d+[A-Za-z]?) %{title}([^-_\\./ ](?:[^/]*[^-_/ ])?) The regular expression still looks a bit complicated, but tries to be as specific as possible, here it expects tracks to contain a number which can have a leading or trailing digit. In your example, you have a file name "b01.opus", which does not contain a title. So you could remove the part with the title or make it optional: /%{track}([A-Za-z]?\d+[A-Za-z]?)(?: %{title}([^-_\\./ ](?:[^/]*[^-_/ ])?))? As kid3-qt and kid3-cli share their configuration, you can now use kid3-cli and "totag" should work as expected (you could also change the configuration from kid3-cli with the config command, but that is a bit more complicated). $ kid3-cli -c totag 02b.opus $ kid3-cli -c get 02b.opus File: Opus 1 114 kbps 48000 Hz 2 Channels Name: 02b.opus Tag 2: Vorbis Track Number 02b Encoder opusenc from opus-tools 0.1.2 With kid3-cli you can explicitly give the format, which you did in your example, so you just have to explicitly give the regular expression capture (if you do not want to change to format in the configuration). $ kid3-cli -c "totag '/%{track}([A-Za-z]?\d+[A-Za-z]?)'" 02b.opus $ kid3-cli -c get 02b.opus File: Opus 1 114 kbps 48000 Hz 2 Channels Name: 02b.opus Tag 2: Vorbis Track Number 02b Encoder opusenc from opus-tools 0.1.2
I have now adapted the standard regular expressions used when setting the track number frame from the file name, so you do not have to deal with regular expressions. You can find the fixed version git20221210 on https://sourceforge.net/projects/kid3/files/kid3/development/.
Thank you