hb-view --help-all
u01@vm01:~$ hb-view --help-all Usage: hb-view [OPTION...] [FONT-FILE] [TEXT]
Help Options: -h, --help Show help options --help-all Show all help options --help-font Options controlling the font --help-text Options controlling the input text --help-shape Options controlling the shaping process --help-features Options controlling font features used --help-output Options controlling the destination and form of the output --help-view Options controlling output rendering
Font options: --font-file=filename Set font file-name --face-index=index Set face index (default: 0) --font-size=1/2 numbers or 'upem' Font size (default: 256) --font-funcs=impl Set font functions implementation to use (default: ft) Supported font function implementations are: ft/ot
Text options: --text=string Set input text --text-file=filename Set input text file-name If no text is provided, standard input is used for input. --text-before=string Set text context before each line --text-after=string Set text context after each line
Shape options: --list-shapers List available shapers and quit --shapers=list Set comma-separated list of shapers to try --direction=ltr/rtl/ttb/btt Set text direction (default: auto) --language=langstr Set text language (default: $LANG) --script=ISO-15924 tag Set text script (default: auto) --bot Treat text as beginning-of-paragraph --eot Treat text as end-of-paragraph --preserve-default-ignorables Preserve Default-Ignorable characters --utf8-clusters Use UTF8 byte indices, not char indices --cluster-level=0/1/2 Cluster merging level (default: 0) --normalize-glyphs Rearrange glyph clusters in nominal order --num-iterations=N Run shaper N times (default: 1)
Features options: --features=list Comma-separated list of font features Features can be enabled or disabled, either globally or limited to specific character ranges. The format for specifying feature settings follows. All valid CSS font-feature-settings values other than 'normal' and 'inherited' are also accepted, though, not documented below. The range indices refer to the positions between Unicode characters, unless the --utf8-clusters is provided, in which case range indices refer to UTF-8 byte indices. The position before the first character is always 0. The format is Python-esque. Here is how it all works: Syntax: Value: Start: End: Setting value: "kern" 1 0 ∞ # Turn feature on "+kern" 1 0 ∞ # Turn feature on "-kern" 0 0 ∞ # Turn feature off "kern=0" 0 0 ∞ # Turn feature off "kern=1" 1 0 ∞ # Turn feature on "aalt=2" 2 0 ∞ # Choose 2nd alternate Setting index: "kern[]" 1 0 ∞ # Turn feature on "kern[:]" 1 0 ∞ # Turn feature on "kern[5:]" 1 5 ∞ # Turn feature on, partial "kern[:5]" 1 0 5 # Turn feature on, partial "kern[3:5]" 1 3 5 # Turn feature on, range "kern[3]" 1 3 3+1 # Turn feature on, single char Mixing it all: "aalt[3:5]=2" 2 3 5 # Turn 2nd alternate on for range
Output destination & format options: --output-file=filename Set output file-name (default: stdout) --output-format=format Set output format Supported output formats are: ansi/png/svg/pdf/ps/eps
View options: --annotate Annotate output rendering --background=rrggbb/rrggbbaa Set background color (default: #FFFFFF) --foreground=rrggbb/rrggbbaa Set foreground color (default: #000000) --line-space=units Set space between lines (default: 0) --margin=one to four numbers Margin around output (default: 16)
Application Options: --version Show version numbers --debug Free all resources before exit
u01@vm01:~$