Help list for training/tesstrain.sh

[FernandoGOT]

I recommend a help list when someone execute only training/tesstrain.sh and a more detailed if used with training/tesstrain.sh --help like the other commands

[Shreeshrii]

A simple implementation could display the commented out usage info.

cat <<EOF
Usage: $0 [options]

# USAGE:
#
# tesstrain.sh
#    --fontlist FONTS           # A list of fontnames to train on.
#    --fonts_dir FONTS_PATH     # Path to font files.
#    --lang LANG_CODE           # ISO 639 code.
#    --langdata_dir DATADIR     # Path to tesseract/training/langdata directory.
#    --output_dir OUTPUTDIR     # Location of output traineddata file.
#    --overwrite                # Safe to overwrite files in output_dir.
#    --linedata_only            # Only generate training data for lstmtraining.
#    --run_shape_clustering     # Run shape clustering (use for Indic langs).
#    --exposures EXPOSURES      # A list of exposure levels to use (e.g. "-1 0 1").
#
# OPTIONAL flags for input data. If unspecified we will look for them in
# the langdata_dir directory.
#    --training_text TEXTFILE   # Text to render and use for training.
#    --wordlist WORDFILE        # Word list for the language ordered by
#                               # decreasing frequency.
#
# OPTIONAL flag to specify location of existing traineddata files, required
# during feature extraction. If unspecified will use TESSDATA_PREFIX defined in
# the current environment.
#    --tessdata_dir TESSDATADIR     # Path to tesseract/tessdata directory.
#
# NOTE:
# The font names specified in --fontlist need to be recognizable by Pango using
# fontconfig. An easy way to list the canonical names of all fonts available on
# your system is to run text2image with --list_available_fonts and the
# appropriate --fonts_dir path.


EOF

[Shreeshrii]

The above falls through to parsing the arguments,

ERROR: Need to specify a language --lang

So, needs to be modified to exit the script.