Don't clobber HISTSIZE or SAVEHIST if they're already set
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@ -1,9 +1,13 @@
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## Command history configuration
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if [ -z $HISTFILE ]; then
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if [ -z "$HISTFILE" ]; then
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HISTFILE=$HOME/.zsh_history
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fi
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if [ -z "$HISTSIZE" ]; then
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HISTSIZE=10000
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fi
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if [ -z "$SAVEHIST" ]; then
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SAVEHIST=10000
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fi
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setopt extended_history
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setopt hist_expire_dups_first
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