thanks to Leetel for pointing me in the direction of git-filter-branch. This became a one-liner now!

cv · cv · commit a5ee01e6f253 · 2008-07-26T22:47:33.000+01:00
diff --git a/git-iterate b/git-iterate
@@ -6,9 +6,5 @@
 # 
 # Example: git-iterate 'echo `flog -s app` `flog -s spec`'
 #
-
-for i in `ruby -e 'puts %x{git log}.grep(/^commit/).map {|line| line.gsub(/commit /, "").strip }.reverse'`
-do
-  git reset -q --hard $i
-  eval $* $i
-done
+# FIXME: unsafe regex
+git-filter-branch --tree-filter "$1" | sed s/Rewrite.*\)//g

Original file line number	Diff line number	Diff line change
`@@ -6,9 +6,5 @@`
`6`	`6`	`#`
`7`	`7`	# Example: git-iterate 'echo `flog -s app` `flog -s spec`'
`8`	`8`	`#`
`9`		`-`
`10`		-for i in `ruby -e 'puts %x{git log}.grep(/^commit/).map {\|line\| line.gsub(/commit /, "").strip }.reverse'`
`11`		`-do`
`12`		`- git reset -q --hard $i`
`13`		`- eval $* $i`
`14`		`-done`
	`9`	`+# FIXME: unsafe regex`
	`10`	`+git-filter-branch --tree-filter "$1" \| sed s/Rewrite.*\)//g`