mirror of
https://github.com/notwa/rc
synced 2024-05-20 10:53:23 -07:00
25 lines
645 B
Bash
Executable File
25 lines
645 B
Bash
Executable File
#!/usr/bin/env sh
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# YES_ZSH
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# YES_BASH
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# YES_DASH
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# YES_ASH
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# YES_BB_AWK
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countdiff() { ### @-
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### count the number of lines changed between two files.
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###
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### **TODO:** don't use git for this. also, use patience algorithm.
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###
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### ```
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### $ countdiff README-old.md README.md
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### 739
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### ```
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[ $# -gt 1 ] || { printf "%s\n" "$0: too few arguments" >&2; return 1; }
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[ $# -le 2 ] || { printf "%s\n" "$0: too many arguments" >&2; return 1; }
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git --no-pager diff --stat --no-color --no-index "$1" "$2" \
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| awk '/changed/{print $4+$6;a=1}END{if(!a)print 0}'
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}
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[ -n "${preload+-}" ] || countdiff "$@"
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