git - Print percentage of dissimilarity -

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sometimes when drastically change file, triggers rewrite:

yes | head -256 > pa.txt git add . git commit -m qu truncate -s128 pa.txt yes n | head -64 >> pa.txt git commit -am ro

result:

[master 79b5658] ro  1 file changed, 128 insertions(+), 256 deletions(-)  rewrite pa.txt (75%)

however not happen smaller changes:

yes | head -128 > pa.txt git add . git commit -m qu truncate -s64 pa.txt yes n | head -32 >> pa.txt git commit -am ro

result:

[master 88ef937] ro  1 file changed, 32 insertions(+), 96 deletions(-)

can run command show percent change regardless of amount? looked git diff-tree, again seems show when change drastic.

git diff -u10000 | awk ' /^i/ {getline; next} /^-/ {pa += length} /^ / {qu += length} end {printf "%.0f%\n", pa/(pa+qu)*100} '

  1. force full context -u10000

  2. filter out --- lines

  3. filter in deletions , context lines

  4. count bytes each


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