#unexpand

The cli/unexpand@0.1.0 candidate converts runs of spaces to tabs while preserving the column positions of the input. It reads standard input when no file is given, accepts multiple files, and preserves all non-space bytes and line boundaries.

By default only leading blank runs are converted. -a/--all converts runs after nonblank bytes too. --first-only restricts conversion to the first leading blank run. -t LIST/--tabs=LIST selects positive, strictly ascending tab stops and implies --all; a single stop repeats at that width, while an explicit list preserves blanks beyond its final stop. The default tab stop is 8 columns. Invalid lists are rejected with status 2.

Column tracking follows the C-locale byte stream. Existing tabs are preserved and advance to the next configured stop; backspace moves one column left.

Source Files

main.mbt

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