better handling of discarding files

test/integration/discardFileChanges/expected/.git_keep/COMMIT_EDITMSG

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+three

test/integration/discardFileChanges/expected/.git_keep/HEAD

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+ref: refs/heads/conflict_second

test/integration/discardFileChanges/expected/.git_keep/MERGE_HEAD

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+38b645bf2388b21695d22d7f673d87971a78e4ad

test/integration/discardFileChanges/expected/.git_keep/MERGE_MSG

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+Merge branch 'conflict' into conflict_second
+
+# Conflicts:
+#	added-them-changed-us.txt
+#	both-added.txt
+#	both-deleted.txt
+#	both-modded.txt
+#	changed-them-added-us.txt
+#	deleted-them.txt
+#	deleted-us.txt

test/integration/discardFileChanges/expected/.git_keep/ORIG_HEAD

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+c64dd6aea3efd197ed630dedc1ffb538d35c3fdb

test/integration/discardFileChanges/expected/.git_keep/config

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+[core]
+	repositoryformatversion = 0
+	filemode = true
+	bare = false
+	logallrefupdates = true
+	ignorecase = true
+	precomposeunicode = true
+[user]
+	email = CI@example.com
+	name = CI

test/integration/discardFileChanges/expected/.git_keep/description

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+Unnamed repository; edit this file 'description' to name the repository.

test/integration/discardFileChanges/expected/.git_keep/info/exclude

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+# git ls-files --others --exclude-from=.git/info/exclude
+# Lines that start with '#' are comments.
+# For a project mostly in C, the following would be a good set of
+# exclude patterns (uncomment them if you want to use them):
+# *.[oa]
+# *~
+.DS_Store

test/integration/discardFileChanges/expected/.git_keep/logs/HEAD

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+0000000000000000000000000000000000000000 0e5c9fd43732ca064946e9c582fd6f159774db84 CI <CI@example.com> 1616203051 +1100	commit (initial): one
+0e5c9fd43732ca064946e9c582fd6f159774db84 eb4814e3f9d5eb1869704cf4498420c9f4a141da CI <CI@example.com> 1616203051 +1100	commit: both-deleted.txt renamed in added-them-changed-us.txt
+eb4814e3f9d5eb1869704cf4498420c9f4a141da 38b645bf2388b21695d22d7f673d87971a78e4ad CI <CI@example.com> 1616203051 +1100	commit: two
+38b645bf2388b21695d22d7f673d87971a78e4ad 0e5c9fd43732ca064946e9c582fd6f159774db84 CI <CI@example.com> 1616203051 +1100	checkout: moving from conflict to conflict_second
+0e5c9fd43732ca064946e9c582fd6f159774db84 698e214196fed018bb4164380745dd2df3bbac74 CI <CI@example.com> 1616203051 +1100	commit: both-deleted.txt renamed in changed-them-added-us.txt
+698e214196fed018bb4164380745dd2df3bbac74 c64dd6aea3efd197ed630dedc1ffb538d35c3fdb CI <CI@example.com> 1616203052 +1100	commit: three
+c64dd6aea3efd197ed630dedc1ffb538d35c3fdb c64dd6aea3efd197ed630dedc1ffb538d35c3fdb CI <CI@example.com> 1616203052 +1100	reset: moving to conflict_second

test/integration/discardFileChanges/expected/.git_keep/logs/refs/heads/conflict

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+0000000000000000000000000000000000000000 0e5c9fd43732ca064946e9c582fd6f159774db84 CI <CI@example.com> 1616203051 +1100	commit (initial): one
+0e5c9fd43732ca064946e9c582fd6f159774db84 eb4814e3f9d5eb1869704cf4498420c9f4a141da CI <CI@example.com> 1616203051 +1100	commit: both-deleted.txt renamed in added-them-changed-us.txt
+eb4814e3f9d5eb1869704cf4498420c9f4a141da 38b645bf2388b21695d22d7f673d87971a78e4ad CI <CI@example.com> 1616203051 +1100	commit: two

test/integration/discardFileChanges/expected/.git_keep/logs/refs/heads/conflict_second

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+0000000000000000000000000000000000000000 0e5c9fd43732ca064946e9c582fd6f159774db84 CI <CI@example.com> 1616203051 +1100	branch: Created from conflict
+0e5c9fd43732ca064946e9c582fd6f159774db84 698e214196fed018bb4164380745dd2df3bbac74 CI <CI@example.com> 1616203051 +1100	commit: both-deleted.txt renamed in changed-them-added-us.txt
+698e214196fed018bb4164380745dd2df3bbac74 c64dd6aea3efd197ed630dedc1ffb538d35c3fdb CI <CI@example.com> 1616203052 +1100	commit: three

test/integration/discardFileChanges/expected/.git_keep/objects/0e/5c9fd43732ca064946e9c582fd6f159774db84

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+x
<01>ÍA
+Â@@Q×sŠì’¤cR¡ˆÐU<C390>‘§”)x|{„n?~ª¥¼PäKÛÜ¡GÔtO¨KÐ̔ʔ£kvæEt¶·WÝ`šaœæ§ÿ¬¬¿¦Z@BÂØã<C398> #BG=&ÍOòP¿þIÔ*Ê

test/integration/discardFileChanges/expected/.git_keep/objects/c6/4dd6aea3efd197ed630dedc1ffb538d35c3fdb

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+x
<01>ÎA
+Â0@Q×9Eö‚ÌLÒd"BW=F&™ `l)<¾=‚ÛÏ_¼²öþ<13>Æ®j§TZ”ȹ¥œ…=£“" …E)¶Za³å]ßÆÄJè1…¦<15>E<j¥ÚœH.Ñ›ü<19>u·ób¯ór×oîÛK/eí7‹
<03>ƒ‰ìÀõ@
ýs7ãqÐÍÛ':G

test/integration/discardFileChanges/expected/.git_keep/objects/eb/4814e3f9d5eb1869704cf4498420c9f4a141da

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+x
<01>ŽAjÃ0E»Ö)f_F²$[PJ!«c$}Õ<>Èîrü:7Èò=Þâ•­÷«’óü¡;@à9K.1[N<>­mÞA²„6%DÄ4N˜Ì]v¬JŒPR«~œFW„£O>"•0»Vc³!M“¯yöFºl;<3B>/ôu¾üà)ý~élý›l´ÑñÈÁÒ§µÌæ°Ç”âÍÜäM—¡âE=éSéX“ŽJו¤VÔAô¡,²þðø{EæVJK–

test/integration/discardFileChanges/expected/.git_keep/refs/heads/conflict

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+38b645bf2388b21695d22d7f673d87971a78e4ad

test/integration/discardFileChanges/expected/.git_keep/refs/heads/conflict_second

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+c64dd6aea3efd197ed630dedc1ffb538d35c3fdb

test/integration/discardFileChanges/expected/both-added.txt

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+blah2

test/integration/discardFileChanges/expected/both-modded.txt

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+mod2

test/integration/discardFileChanges/expected/change-delete.txt

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+change-delete

test/integration/discardFileChanges/expected/changed-them-added-us.txt

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+test

test/integration/discardFileChanges/expected/delete-change.txt

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+delete-change

test/integration/discardFileChanges/expected/deleted-staged.txt

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+del

test/integration/discardFileChanges/expected/deleted-them.txt

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+modded

test/integration/discardFileChanges/expected/deleted.txt

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+del

test/integration/discardFileChanges/expected/double-modded.txt

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+double-modded

test/integration/discardFileChanges/expected/modded-staged.txt

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+mod

test/integration/discardFileChanges/expected/modded.txt

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+mod

test/integration/discardFileChanges/expected/renamed.txt

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+renamed\nhaha

test/integration/discardFileChanges/setup.sh

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+#!/bin/sh
+
+cd $1
+
+git init
+
+git config user.email "CI@example.com"
+git config user.name "CI"
+
+# common stuff
+echo test > both-deleted.txt
+git checkout -b conflict && git add both-deleted.txt
+echo bothmodded > both-modded.txt && git add both-modded.txt
+echo haha > deleted-them.txt && git add deleted-them.txt
+echo haha2 > deleted-us.txt && git add deleted-us.txt
+echo mod > modded.txt & git add modded.txt
+echo mod > modded-staged.txt & git add modded-staged.txt
+echo del > deleted.txt && git add deleted.txt
+echo del > deleted-staged.txt && git add deleted-staged.txt
+echo change-delete > change-delete.txt && git add change-delete.txt
+echo delete-change > delete-change.txt && git add delete-change.txt
+echo double-modded > double-modded.txt && git add double-modded.txt
+echo "renamed\nhaha" > renamed.txt && git add renamed.txt
+git commit -m one
+
+# stuff on other branch
+git branch conflict_second && git mv both-deleted.txt added-them-changed-us.txt
+git commit -m "both-deleted.txt renamed in added-them-changed-us.txt"
+echo blah > both-added.txt && git add both-added.txt
+echo mod1 > both-modded.txt && git add both-modded.txt
+rm deleted-them.txt && git add deleted-them.txt
+echo modded > deleted-us.txt && git add deleted-us.txt
+git commit -m "two"
+
+# stuff on our branch
+git checkout conflict_second
+git mv both-deleted.txt changed-them-added-us.txt
+git commit -m "both-deleted.txt renamed in changed-them-added-us.txt"
+echo mod2 > both-modded.txt && git add both-modded.txt
+echo blah2 > both-added.txt && git add both-added.txt
+echo modded > deleted-them.txt && git add deleted-them.txt
+rm deleted-us.txt && git add deleted-us.txt
+git commit -m "three"
+git reset --hard conflict_second
+git merge conflict
+
+echo "new" > new.txt
+echo "new staged" > new-staged.txt && git add new-staged.txt
+echo mod2 > modded.txt
+echo mod2 > modded-staged.txt && git add modded-staged.txt
+rm deleted.txt
+rm deleted-staged.txt && git add deleted-staged.txt
+echo change-delete2 > change-delete.txt && git add change-delete.txt
+rm change-delete.txt
+rm delete-change.txt && git add delete-change.txt
+echo "changed" > delete-change.txt
+echo "change1" > double-modded.txt && git add double-modded.txt
+echo "change2" > double-modded.txt
+echo before > added-changed.txt && git add added-changed.txt
+echo after > added-changed.txt
+rm renamed.txt && git add renamed.txt
+echo "renamed\nhaha" > renamed2.txt && git add renamed2.txt

test/integration/discardFileChanges/test.json

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+{ "description": "discard file changes for various kinds of situations (merge conflicts, etc)", "speed": 2 }