我有一個腳本：
#!/bin/bash
git log -1 | grep -w '^commit' | cut -d ' ' -f2 | git show | grep -w '^index' | cut -d ' ' -f2 > tmp_out
while read -r arg
do
arg1=${arg[@]:0:10}
arg2=${arg[@]:23:10}
cmd="git diff ${arg1}^ ${arg2}"
echo $cmd
$cmd
done <tmp_out
理論上應該顯示在 git merge 期間發生的所有合并沖突。腳本給出錯誤：
git diff <SHA1>^ <SHA2>
error: object <SHA1> is a blob, not a commit
error: object <SHA1> is a blob, not a commit
fatal: ambiguous argument '<SHA1>^': unknown revision or path not in the working tree.
（SHA1 和 SHA2 是索引哈希）但是當我手動復制命令并運行時：
git diff <SHA1>^ <SHA2>
有用。所以我的問題是：為什么shell腳本不能執行git diff <SHA1>^ <SHA2>？
uj5u.com熱心網友回復：
解決辦法是徹底去除^。來自@torek 在評論中的回答。
#!/bin/bash
git show | grep -w '^index' | cut -d ' ' -f2 > tmp_out
while read -r arg
do
arg1=${arg[@]:0:10}
arg2=${arg[@]:23:10}
cmd="git diff ${arg1} ${arg2}"
echo $cmd
$cmd
done <tmp_out
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