Living on the edge: truncating the path on your PS1
TL;DR
I didn’t like how the default zsh prompt truncation works. My solution, used in
my own custom-made prompt (fully supported by promptinit), uses a custom
precmd hook to dynamically determine the terminal’s available width.
Instead of blind chopping, my custom logic ensures human-readable truncation by following simple rules: it always preserves the home directory (∼) and the current directory name, only removing or shortening non-critical segments in the middle to keep the PS1 clean, contextual, and perfectly single-line. This is done via a so-called “Zig-Zag” pattern or string splitting on certain delimiters.
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