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add _p9k_prompt_length
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1 changed files with 23 additions and 0 deletions
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@ -45,6 +45,29 @@ function _p9k_g_expand() {
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typeset -g $1=${(g::)${(P)1}}
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}
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# If we execute `print -P $1`, how many characters will be printed on the last line?
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# Assumes that `%{%}` and `%G` don't lie.
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#
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# _p9k_prompt_length '' => 0
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# _p9k_prompt_length 'abc' => 3
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# _p9k_prompt_length $'abc\nxy' => 2
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# _p9k_prompt_length $'\t' => 8
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# _p9k_prompt_length '%F{red}abc' => 3
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# _p9k_prompt_length $'%{a\b%Gb%}' => 1
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function _p9k_prompt_length() {
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emulate -L zsh
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local -i x y=$#1 m
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if (( y )); then
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while (( ${${(%):-$1%$y(l.1.0)}[-1]} )); do (( y *= 2 )); done
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local xy
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while (( y > x + 1 )); do
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m=$(( x + (y - x) / 2 ))
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typeset ${${(%):-$1%$m(l.x.y)}[-1]}=$m
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done
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fi
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_P9K_RETVAL=$x
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}
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typeset -g _P9K_BYTE_SUFFIX=('B' 'K' 'M' 'G' 'T' 'P' 'E' 'Z' 'Y')
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# 42 => 42B
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