test for old histedit issue #6:

editing a changeset without any actual change would corrupt the repository

  $ . "$TESTDIR/histedit-helpers.sh"

  $ cat >> $HGRCPATH <<EOF

  > [extensions]

  > histedit=

  > EOF

  $ initrepo ()

  > {

  >     dir="$1"

  >     comment="$2"

  >     if [ -n "${comment}" ]; then

  >         echo % ${comment}

  >         echo % ${comment} | sed 's:.:-:g'

  >     fi

  >     hg init ${dir}

  >     cd ${dir}

  >     for x in a b c d e f ; do

  >         echo $x > $x

  >         hg add $x

  >         hg ci -m $x

  >     done

  >     cd ..

  > }

  $ geneditor ()

  > {

  >     # generate an editor script for selecting changesets to be edited

  >     choice=$1  # changesets that should be edited (using sed line ranges)

  >     cat <<EOF | sed 's:^....::'

  >     # editing the rules, replacing 'pick' with 'edit' for the chosen lines

  >     sed '${choice}s:^pick:edit:' "\$1" > "\${1}.tmp"

  >     mv "\${1}.tmp" "\$1"

  >     # displaying the resulting rules, minus comments and empty lines

  >     sed '/^#/d;/^$/d;s:^:| :' "\$1" >&2

  > EOF

  > }

  $ startediting ()

  > {

  >     # begin an editing session

  >     choice="$1"  # changesets that should be edited

  >     number="$2"  # number of changesets considered (from tip)

  >     comment="$3"

  >     geneditor "${choice}" > edit.sh

  >     echo % start editing the history ${comment}

  >     HGEDITOR="sh ./edit.sh" hg histedit -- -${number} 2>&1 | fixbundle

  > }

  $ continueediting ()

  > {

  >     # continue an edit already in progress

  >     editor="$1"  # message editor when finalizing editing

  >     comment="$2"

  >     echo % finalize changeset editing ${comment}

  >     HGEDITOR=${editor} hg histedit --continue 2>&1 | fixbundle

  > }

  $ graphlog ()

  > {

  >     comment="${1:-log}"

  >     echo % "${comment}"

  >     hg log -G --template '{rev} {node} \"{desc|firstline}\"\n'

  > }

  $ initrepo r1 "test editing with no change"

  % test editing with no change

  -----------------------------

  $ cd r1

  $ graphlog "log before editing"

  % log before editing

  @  5 652413bf663ef2a641cab26574e46d5f5a64a55a "f"

  |

  o  4 e860deea161a2f77de56603b340ebbb4536308ae "e"

  |

  o  3 055a42cdd88768532f9cf79daa407fc8d138de9b "d"

  |

  o  2 177f92b773850b59254aa5e923436f921b55483b "c"

  |

  o  1 d2ae7f538514cd87c17547b0de4cea71fe1af9fb "b"

  |

  o  0 cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b "a"

  $ startediting 2 3 "(not changing anything)" # edit the 2nd of 3 changesets

  % start editing the history (not changing anything)

  | pick 055a42cdd887 3 d

  | edit e860deea161a 4 e

  | pick 652413bf663e 5 f

  0 files updated, 0 files merged, 2 files removed, 0 files unresolved

  Editing (e860deea161a), commit as needed now to split the change

  (to edit e860deea161a, `hg histedit --continue` after making changes)

  $ continueediting true "(leaving commit message unaltered)"

  % finalize changeset editing (leaving commit message unaltered)

check state of working copy

  $ hg id

  794fe033d0a0 tip

  $ graphlog "log after history editing"

  % log after history editing

  @  5 794fe033d0a030f8df77c5de945fca35c9181c30 "f"

  |

  o  4 04d2fab980779f332dec458cc944f28de8b43435 "e"

  |

  o  3 055a42cdd88768532f9cf79daa407fc8d138de9b "d"

  |

  o  2 177f92b773850b59254aa5e923436f921b55483b "c"

  |

  o  1 d2ae7f538514cd87c17547b0de4cea71fe1af9fb "b"

  |

  o  0 cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b "a"

  $ cd ..

  $ initrepo r2 "test editing with no change, then abort"

  % test editing with no change, then abort

  -----------------------------------------

  $ cd r2

  $ graphlog "log before editing"

  % log before editing

  @  5 652413bf663ef2a641cab26574e46d5f5a64a55a "f"

  |

  o  4 e860deea161a2f77de56603b340ebbb4536308ae "e"

  |

  o  3 055a42cdd88768532f9cf79daa407fc8d138de9b "d"

  |

  o  2 177f92b773850b59254aa5e923436f921b55483b "c"

  |

  o  1 d2ae7f538514cd87c17547b0de4cea71fe1af9fb "b"

  |

  o  0 cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b "a"

  $ startediting 1,2 3 "(not changing anything)" # edit the 1st two of 3 changesets

  % start editing the history (not changing anything)

  | edit 055a42cdd887 3 d

  | edit e860deea161a 4 e

  | pick 652413bf663e 5 f

  0 files updated, 0 files merged, 3 files removed, 0 files unresolved

  Editing (055a42cdd887), commit as needed now to split the change

  (to edit 055a42cdd887, `hg histedit --continue` after making changes)

  $ continueediting true "(leaving commit message unaltered)"

  % finalize changeset editing (leaving commit message unaltered)

  Editing (e860deea161a), commit as needed now to split the change

  (to edit e860deea161a, `hg histedit --continue` after making changes)

  $ graphlog "log after first edit"

  % log after first edit

  @  6 e5ae3ca2f1ffdbd89ec41ebc273a231f7c3022f2 "d"

  |

  | o  5 652413bf663ef2a641cab26574e46d5f5a64a55a "f"

  | |

  | o  4 e860deea161a2f77de56603b340ebbb4536308ae "e"

  | |

  | o  3 055a42cdd88768532f9cf79daa407fc8d138de9b "d"

  |/

  o  2 177f92b773850b59254aa5e923436f921b55483b "c"

  |

  o  1 d2ae7f538514cd87c17547b0de4cea71fe1af9fb "b"

  |

  o  0 cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b "a"

abort editing session, after first forcibly updating away

  $ hg up 0

  abort: histedit in progress

  (use 'hg histedit --continue' or 'hg histedit --abort')

  [20]

  $ mv .hg/histedit-state .hg/histedit-state-ignore

  $ hg up 0

  0 files updated, 0 files merged, 3 files removed, 0 files unresolved

  $ mv .hg/histedit-state-ignore .hg/histedit-state

  $ hg sum

  parent: 0:cb9a9f314b8b 

   a

  branch: default

  commit: 1 added, 1 unknown (new branch head)

  update: 6 new changesets (update)

  phases: 7 draft

  hist:   2 remaining (histedit --continue)

  $ hg histedit --abort 2>&1 | fixbundle

modified files should survive the abort when we've moved away already

  $ hg st

  A e

  ? edit.sh

  $ graphlog "log after abort"

  % log after abort

  o  5 652413bf663ef2a641cab26574e46d5f5a64a55a "f"

  |

  o  4 e860deea161a2f77de56603b340ebbb4536308ae "e"

  |

  o  3 055a42cdd88768532f9cf79daa407fc8d138de9b "d"

  |

  o  2 177f92b773850b59254aa5e923436f921b55483b "c"

  |

  o  1 d2ae7f538514cd87c17547b0de4cea71fe1af9fb "b"

  |

  @  0 cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b "a"

aborting and not changing files can skip mentioning updating (no) files

  $ hg up

  5 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg commit --close-branch -m 'closebranch'

  $ startediting 1 1 "(not changing anything)" # edit the 3rd of 3 changesets

  % start editing the history (not changing anything)

  | edit 292aec348d9e 6 closebranch

  Editing (292aec348d9e), commit as needed now to split the change

  (to edit 292aec348d9e, `hg histedit --continue` after making changes)

  $ hg histedit --abort

  $ cd ..