Load built-in config when TIGRC_SYSTEM is defined but empty

[tig.git] / NEWS.adoc

Release notes
=============

master
------

Note to packagers:

 - Rename README, INSTALL, and NEWS to end in '.adoc'.
 - BUGS file has been merged into README.
 - Rename (again) doc/ AsciiDoc files to end in '.adoc'.
 - Default keybindings have been moved to a system-level tigrc file, which is
   installed to ${sysconfdir} by default. A version of the tigrc file is
   included inside the binary as a fall-back. Pass `NO_BUILTIN_TIGRC=y` to not
   include the tigrc and reduce the size of the binary.
 - The example `contrib/tigrc` file (made obsolete by `tigrc`) has been removed.
 - Source files was moved to `src` and `include`.
 - Build output is less verbose by default; use `make V=1` for full output.

Incompatibilities:

 - Only use 'diff-options' for the diff view and introduce '%(cmdlineargs)' to
   hold non-file and non-revision flags passed on the command line. Affects all
   user-defined commands that expect '%(diffargs)' to hold both 'diff-options'
   arguments and those passed on the command line. (GH #228)
 - Remove built-in keybinding for `git gc`. Add the following line to `~/.tigrc`
   to restore it: `bind generic G ?git gc`.
 - To support view specific colors, '.' can no longer be used interchangeably
   with '-' and '_' in settings names and in particular color names.
 - Replace 'stage-next' action with prompt command using a predefined search
   (see below) and add binding (`@` by default) to also work in the diff view.
 - Most view display options must now be set via the new `*-view` options in
   tigrc. Existing options are no longer recognized, but a warning is shown.

Improvements:

 - Options can be configured and toggled individually for each view. Use the new
   view settings to configure the order and options for each view columns. See
   system tigrc and tigrc(5) for examples. (GH #89, #222)
 - Add mouse support: scroll view, click line to move cursor, double click line
   (or click again) to "Enter" cursor line, e.g. open commit diff. Disabled by
   default, since it makes text selection less intuitive. If you enable this
   remember to hold down Shift (or Option on Mac) when selecting text.
 - Rewrite and improve the rendering of the commit graph. (GH #144, GH #46)
 - Add a new "auto" value for the 'vertical-split' option to let Tig choose the
   split orientation (this is the new default behavior).
 - Add toggle-vertical-split option to change the vertical split value.
 - Add 'stage-split-chunk' action for splitting chunks in the stage view.
   Bound to '\' by default. (GH #107)
 - Add 'back' action bound to '<' by default, which will return the blame view
   to the previous revision and line after moving e.g. to the parent. (GH #124)
 - User-defined commands no longer needs to always be prefixed with '!'.
 - Add auto-configuration for Cygwin (OS name: CYGWIN_NT-6.1). (GH #92)
 - Add toggling for display files of untracked directories.
 - Add main view pager mode that reads git-log's '--pretty=raw' data
   from stdin, e.g. `git reflog --pretty=raw | tig --pretty=raw`.
 - Document the Git commands supported by the pager mode.  (GH #1)
 - Optionally specify custom prompt for `%(prompt)` in shell commands, e.g.
   `bind main B ?git checkout -b "%(prompt Enter new branch name: )"`.
 - Allow Tig to be started with no default keybindings or built-in user-defined
   commands by running: `TIGRC_SYSTEM=~/.tigrc.safe tig`. (GH #235)
 - Open editor at line number for combined diffs e.g. diffs of unmerged files.
 - Copy `-S`, `-G` and `--grep=` pattern to search buffer so 'find-next' and
   'find-prev' work as expected.
 - Support view specific colors: `color stage.diff-add yellow default`.
 - Add grep view as a front-end to git-grep(1): `tig grep -p strchr`. From
   within Tig, the key for switching or grepping is bound to 'G' by default.
 - Warn about conflicting keybindings using Ctrl, e.g. `^f` and `^F`. (GH #218)
 - Extend key bindings for prompt commands (ie. `bind <keymap> <key> :<prompt>`)
   to support predefined searches, eg.: `bind stage 2 :?^@@`.
 - Add :toggle prompt command as a way to manipulate options using keybindings.
   For example: `bind diff D diff-options --patience --notes`. (GH #69)
 - Adjust author width automatically. (GH #49)
 - Make reference label formatting configurable, for example:
   `set reference-format = (branch) <tags> remote`. (GH #201)
 - Rename 'branch' view to 'refs' view and show tags. (GH #134)
 - More informative configuration error messages.
 - Add completion and history support to the prompt via readline. (GH #185)
 - Add support for `--graph` and highlight diff stats in the log view.
 - Add builtin command bindings: `!` to delete branch, `!` to drop stash.
 - Add %(remote) and %(tag) symbols to complement %(branch).
 - Git color mappings can be configured in tigrc.

Bug fixes:

 - Fix stash diff display when reloading the stash view after a deleting.
 - Set the commit reference when opening the blame view from the blob view.
 - Correctly identify and highlight the remote branch tracked by HEAD.
 - Pass --no-color after user defined arguments to ensure that colors do not
   break the output parsing. (GH #191)
 - Close stdin when pager mode is not supported.
 - Show newly created branches in the main view. (GH #196)
 - File with 0 changes breaks diffstat highlighting (GH #215)
 - Update %(branch) variable in the main view. (GH #223)
 - Disable graph rendering when either of `--reverse`, `-S`, `-G`, and `--grep`
   are passed to the main view. (GH #127)
 - Only refresh views that support it.
 - Fix author and date annotation of renamed entries in the tree view.
 - Fix use of unsafe methods in the signal handler. (GH #245)
 - Fix rendering in non-UTF8 terminals.
 - Fix stage-update-line by rewriting the diff chunk containing the line instead
   of using `--unidiff-zero` and a diff context of zero. (GH #130)
 - Fix status-update to work for untracked directories. (GH #236)
 - Don't pass log parameters given on the command line to the diff view.

tig-1.2.1
---------

Incompatibilities:

 - Move manual and man pages to doc/ directory and rename AsciiDoc files
   to have .asciidoc as the extension to make them render on GitHub.

Improvements:

 - Show blob sizes in the tree view either as bytes or using binary unit
   prefixes. Example: `set show-file-size = units`. (GH #163)
 - Reduce main view memory usage and startup time, especially when revision
   graph rendering is disabled. (GH #160)

Bug fixes:

 - Fix submodule-related setup to check for non-zero return value from
   setenv(). (GH #188)

tig-1.2
-------

 - Tig now has its own tag on Stack Overflow, where users are invited to
   ask questions: http://stackoverflow.com/questions/tagged/tig

Improvements:

 - Prompt commands can be bound to keys. For example:
   `bind diff F :set diff-options = --full-diff`. (GH #69, #116)
 - Add a diff-options setting for specifying default diff options.
   Example: `set diff-options = --patience`. (GH #116)
 - Options in diff-options and blame-options matching Tig browsing state
   variables are replaced.
 - Show diff stats as wide as the terminal. (GH #109)
 - Show line numbers in the branch view. (GH #135)
 - Add toggles for showing author email or email user names. (GH #115)
 - Open editor at the selected line by prefixing the file argument with
   `+<lineno>`. Tested in vi, Vim, Emacs, Nano, Gedit, Geany. Disable
   by adding `set editor-line-number = no` to ~/.tigrc. (GH #118, #119)
 - Add toggle-files to control whether to show full commit diff or only
   the diff concerning the currently selected file, e.g. for blame.
 - Optionally highlight exceeding characters in long commit titles.
   The default title max width is 50 characters. Customize using:
   `set title-overflow = 50` (GH #125)
 - Add +ESC key bindings. Example: `bind generic ^[v move-page-up` (GH #120)
 - Create temporary files in TMPDIR, TEMP, or TMP before defaulting to /tmp.
 - Reenable `tig log` as a subcommand. (GH #146)
 - Enable tilde expansion in ~/.tigrc "source" commands. (GH #168)
 - Introduce the stash view, bound to the 'y' keybinding. (GH #169, #174)

Bug fixes:

 - Fix blame and status to work in directories starting with a dot. (GH #172)
 - Reload current branch name when reloading the status view. (GH #93)
 - Fix compile errors on old Solaris. (GH #97)
 - Reload HEAD info when reloading the stage view. (GH #104, #93)
 - Fix disappearing branch labels after external commands. (GH #148)
 - Fix diff view display for staged/unstaged changes when using 'd'.
 - Fix display of status messages when toggling view options. (GH #111)
 - Fix illegal memory access. (GH #98)
 - Fix display of all branches label in repos with short branch names.
 - Fix rendering glitch for branch names.
 - Do not apply diff styling to untracked files in the stage view. (GH #153)
 - Fix tree indentation for entries containing combining characters. (GH #170)
 - Ignore unrepresentable characters when transliterating text for rendering.
 - Transliterate text to output encoding before trimming it to avoid
   misalignment. (GH #86)
 - Introduce a more natural context-sensitive log display. (GH #155)

tig-1.1
-------

Incompatibilities:

 - Disable diff move/copy detection by default, boosting diff
   performance on larger projects. Use git config 'diff.renames' option
   (Git-wide) to set your preferred behavior. Environment variable
   TIG_DIFF_OPTS can be used to restore the old behavior.
 - Fix manual keybinding for stage-single-line. (GH #108)
 - Values set for author-width and filename-width will result in widths
   one character bigger than previously.

Improvements:

 - Typing a text in the prompt will be interpreted as a Tig command.
   Prefixing the command with a '!' will execute this system command in
   an external pager. Entering a single key will execute the
   corresponding key binding.
 - Basic support for wrapping long line in pager, diff, and stage views.
   Enable using: `set wrap-lines = yes`. (GH #2)
 - User-defined commands prefixed with a '?' means prompt before
   execution. Example: `bind main B !?git rebase -i %(commit)`.
 - User-defined commands prefixed with a '<' means exit after execution.
   Example: `bind main C !<git commit`. (GH #66)
 - User-defined commands are executed unquoted to support shell commands.
   Example: `bind generic I !@sh -c "echo -n %(commit) | xclip -selection c"`.
   (GH #65)
 - Configure case-insensitive searches using: `set ignore-case = yes`.
 - Add "deleted mode" line type for better diff coloring.
 - Open editor when requesting edit action from within a file diff.
 - Update AX_WITH_CURSES to build under Cygwin.
 - Improve tigrc(5) documentation. (Debian #682766)
 - Allow to build on Mac OS 10.7 without the configure script. (GH #25)
 - Add option to split the view vertically instead of horizontally.
   Example: `set vertical-split = yes'. (GH #76)
 - Add 'show-id' and 'id-width' options to configure the display of
   commit IDs in the main view and ID width in the blame view. (GH #77)
 - Allow to override Git based encoding to UTF-8 by setting
   'i18n.commitencoding' or 'gui.encoding'.
 - Improve autobuild support to track generated files and work with
   autoreconf 2.61.
 - Commit IDs are read from stdin when --stdin is given; works for main
   and diff view, e.g. `tig --no-walk --stdin < cherry-picks.txt`.
 - Add option to disable focusing of the child view when it's opened.
   Disable using: `set focus-child = no`. (GH #83)
 - Allow to open blob related with added content in a diff. (GH #91)

Bug fixes:

 - Fix commit graph regression when a path spec is specified. (GH #53)
 - Main view: only show staged/unstaged changes for the current branch.
 - Support submodules created with current version of git. (GH #54)
 - Fix diff status message for file diffs with no content changes.
 - Fix parent blaming when Tig is launched in subdirectory. (GH #70)
 - Do not show deleted branch when reloading the branch view.

tig-1.0
-------

The master repository is git://github.com/jonas/tig.git, and the old
master repository (http://jonas.nitro.dk/tig/tig.git) will be retired.

Improvements:

 - Use git-log(1)s default commit ordering. The old behavior can be
   restored by adding `set commit-order = topo` to ~/.tigrc.
 - Support staging of single lines. Bound to '1' default. (GH #21)
 - Use +<lineno> to open the initial view at an arbitrary line. (GH #20)
 - Add show-notes ~/.tigrc option. Notes are displayed by default.
 - Support jumping to specific SHAs in the main view.
 - Decorate replaced commits.
 - Display line numbers in main view.
 - Colorize binary diff stats. (GH #17)
 - Custom colorization of lines matching a string prefix (GH #16).
   Example configuration: color "Reported-by:" green default
 - Use Git's color settings for the main, status and diff views.
   Put `set read-git-colors = no` in ~/.tigrc to disable.
 - Handle editor options with multiple arguments. (GH #12)
 - Show filename when running tig blame with copy detection. (GH #19)
 - Use 'source <path>' command to load additional files from ~/.tigrc
 - User-defined commands prefixed with '@' are run with no console
   output, e.g.

        bind generic 3 !@rm sys$command

 - Make display of space changes togglable in the diff and stage view.
   Bound to 'W' by default.
 - Use per-file encoding specified in gitattributes(5) for blobs and
   unstaged files.
 - Obsolete commit-encoding option and pass --encoding=UTF-8 to revision
   commands.
 - Main view: show uncommitted changes as staged/unstaged commits.
   Can be disabled by putting `set show-changes = no` in ~/.tigrc.
 - Add %(prompt) external command variable, which will prompt for the
   argument value.
 - Log information about Git commands when the TIG_TRACE environment
   variable is set. Example: `TIG_TRACE=/tmp/tig.log tig`
 - Branch view: Show the title of the last commit.
 - Increase the author auto-abbreviation threshold to 10. (GH #49)
 - For old commits show number of years in relative dates. (GH #50)

Bug fixes:

 - Fix navigation behavior when going from branch to main view. (GH #38)
 - Fix segfault when sorting the tree view by author name.
 - Fix diff stat navigation for unmodified files with stat changes.
 - Show branches/refs which names are a substring of the current branch.
 - Stage view: fix off-by-one error when jumping to a file in a diff
   with only one file.
 - Fix diff-header colorization. (GH #15)
  
tig-0.18
--------

Incompatibilities:

 - Remove support for the deprecated TIG_{MAIN,DIFF,LOG,TREE,BLOB}_CMD
   environment variables.

Improvements:

 - Pressing enter on diff stat file lines will jump to file's diff.
 - Naïvely color blame IDs to distinguish lines.
 - Document palette color options used for revision graph and blame IDs.
 - Add support for blaming diff lines.
 - Add diff-context option and bindings to increase the diff context in
   the diff and stage view.
 - (GH-6) Make blame configurable via extra options passed from the command
   line and blame-options setting from ~/.tigrc. For example:
   
        set blame-options = -C -C -C

Bug fixes:

 - Expand browsing state variables for prompt. (LP #694780, Debian #635546)
 - Fix segfault when sorting the branch view by author.
 - Expand %(directory) to . for the root directory. (GH-3)
 - Accept 'utf-8' for the line-graphics option as indicated in the docs.
 - Use erasechar() to check for the correct backspace character.

tig-0.17
--------

Improvements:

 - Start rewrite of the revision graph renderer. Three modes are
   supported UTF-8, ncurses line graphics, and ASCII. Also, enable
   revision graph rendering by default.

Bug fixes:

 - Fix ncurses 5.8 issue by passing non-zero column size to newwin().
 - Fix opening of diffs when browsing branches.

tig-0.16.2
----------

Bug fixes:

 - Fix regression causing empty tree view.
 - Fix set_tabsize() compile error for older versions of ncurses.

tig-0.16.1
----------

Improvements:

 - Add scroll-first-col action to jump to the first column. Bound to '|'
   by default.
 - Add 'status-untracked-dirs' option to ignore unknown directories
   contents in the status view. On by default.

Bug fixes:

 - Fix 'tig show <commit>' to show the provided commit.
 - Fix problem with empty diff views when file specs were passed on the
   command line.
 - Fix segfault when starting Tig in pager mode.

tig-0.16
--------

Incompatibilities:

 - Encode everything internally as UTF-8. This can affect performance,
   but should in general improve handling of character lengths etc.
   Also, to properly handle UTF-8 environments use ncurses with wide
   character support.
 - The use of TIG_{MAIN,DIFF,LOG,TREE,BLOB}_CMD environment variables
   has been deprecated. To allow configuration of the diff view,
   TIG_DIFF_OPTS can be used.

Improvements:

 - Plug several memory leaks.
 - Command line arguments are split into diff, revision, and file
   arguments and made available as %(diffargs), %(revargs), and
   %(fileargs). Diff view will limit diffs using %(fileargs).
 - Status view: update the file variable when a line is selected so
   %(file) works as expected.
 - Branch view: add %(branch) symbol providing access to the selected
   branch.
 - Branch view: add entry to browse all branches (uses git-log's --all
   flag).
 - Abbreviation of author names can now be configured and toggled.
 - Mark detached heads with [HEAD].
 - Add support for displaying dates in local time.

Bug fixes:

 - Status view: fix usage from sub directories, which was broken by the
   changes made to support blame view from sub directories.
 - Fix text expansion to not truncate long lines
 - Fix parsing of boolean show-date values.
 - Fix relative date.
 - Fix unbind to behave as if the keybinding was never defined.
 - Fix unbind to also cover built-in run requests.
 - Fix parsing of unknown keymap names.
 - Blame view: fix parent blame to detect renames. It uses "previous"
   line info from the blame porcelain output added in Git version 1.6.3.

tig-0.15
--------

Incompatibilities:

 - Setting the cursor color no longer automatically sets the text to
   bold. The old 'lazy' behavior was a bug.
 - Remove check for git-repo-config, which was officially deprecated in
   Git version 1.5.4. The configure script no longer depends on Git
   being installed.

Improvements:

 - Provide the manual as a man page named tigmanual(7).
 - Add ability to toggle between showing shorter dates (without time
   info) and relative dates. Use 'D' to toggle between date formats.
 - Show the active (instead of the default) keybindings in the help
   view. Furthermore, honor the keymap when suggesting actions in the
   help messages.
 - Add branch view for choosing which branch to display in the main
   view. Bound to 'H' by default.
 - Tree view: show entry to parent directory ('..') when running from
   subdirectory.
 - Tree view: sort entries by name, date or author. Toggling is bound to
   'i' by default, with 'I' controlling whether or not to sort in
   ascending order.
 - Make height of the lower view in a split view configurable by setting
   the 'split-view-height' variable to a number or a percentage.
   Defaults to 2/3 of the total view height.
 - Allow multiple text attributes for color commands:

        color cursor white blue underline bold

Bug fixes:

 - Blame view: fix loading of blame data when opened from the tree view
   and CWD is not the repo root. (Debian bug 540766)
 - Tree view: fix searching.

tig-0.14.1
----------

Improvements:

 - Status view: improve "on branch" information inspired by the prompt
   code in Git's bash completion script.
 - Colors for 256-capable terminals can be specified as colorN.
 - Entering a number in the prompt will jump to that line number.
 - Handle core.worktree by setting GIT_DIR and GIT_WORK_TREE.
 - Make behavior of horizontal scrolling configurable by setting the
   'horizontal-scroll' variable to a number or a percentage. Defaults to
   scrolling 50% of the view width.

Bug fixes:

 - Status view: show error when failing to open a file.
 - Status view: report failures to update a file.
 - Blame view: fix problem with uninitialized variable.
 - Blame view: use line number information when loading blame for
   specific commit.
 - Fix handling of quoted strings in the config file.
 - Fix horizontal scrolling glitches.

tig-0.14
--------

Incompatibilities:

 - The screen-resize action has been deprecated. It had no real use for
   users and was never meant to be exposed.
 - The "tree-parent" action was renamed to "parent". Warnings will be
   emitted for transition.
 - Remove parsing of deprecated option -S and subcommands log and diff.
 - The "author" color replaces "main-author". Setting the latter will
   now set the "author" color.

Improvements:

 - Horizontal scrolling. Bound to Left/Right by default.
 - Read tigrc(5) options from Git configuration files using the syntax:

        [tig] show-rev-graph = true
        [tig "color"] cursor = yellow red bold 
        [tig "bind"] generic = P parent

 - Tree view: avoid flickering when updating.
 - Tree view: annotate entries with commit information.
 - Tree & blob view: open any blob in an editor.
 - Stage & main view: restore view position when reloading.
 - Blame view: load blame for parent commit. For merge commits the parent
   is queried. Bound to ',' by default via the existing "parent" action.
 - Abbreviate author names to initials when the width of the author column
   is below 6 characters.

Bug fixes:

 - Tree view: fix memory corruption bug when updating.
 - Tree view: improve handling of empty trees.
 - Status view: fix reverting of unmerged files.
 - Fix regression for non-UTF-8 locales corrupting the view data.
 - Fix regression parsing multiple spaces in ~/.tigrc.

tig-0.13
--------

Incompatibilities:

 - Commands from the environment (e.g. TIG_MAIN_CMD) will no longer have
   access to shell features, such as subshells and variable expansion.
   The easiest way to upgrade your configuration is to put such commands
   in a script file or as a Git alias.

Improvements:

 - Display repository references in the sorted order: tags, heads,
   tracked remotes, remotes.
 - Add bash completion for blame.
 - Tree view: edit files of the current branch.
 - Run requests: new identifiers %(directory), %(file), and %(ref)
 - Improve responsiveness and view loading speed by using select(2).

Bug fixes:

 - Separate blame revision and file argument by "--" to avoid problems.
 - Main view: fix redrawing of the last commit wrt. the revision graph.
 - Fix waiting for input after executing a run request in pager mode.
 - Status & stage view: refuse to open directories and deleted files.
 - Tree view: show error when requesting blame for all non-file entries.
 - Do not draw loading views, which are not displayed.
 - Fix launching of mergetool from a subdirectory.

tig-0.12.1
----------

Improvements:

 - Status view: revert uncommitted diff chunks and unstaged files with
   changes. Bound to '!' by default.
 - Main view: use --topo-order also when rev-list arguments are given on
   the command line.
 - Log view: support for refreshing.

Bug fixes:

 - Status view: use ls-files' --exclude-standard so user specific ignore
   rules are effective. The option was added in Git version 1.5.4.
 - Stage view: fix assertion failure triggered when updating while
   status view is not displayed.
 - Help view: avoid confusion by showing "(no key)" instead of "'?'" for
   unbound requests.
 - Reload repository references when refreshing the main (and log) view.
 - Do not maximize views when refreshing.

tig-0.12
--------

Improvements:

 - F5 also refreshes the current view.
 - Allow line graphics to be disabled with new line-graphics option.
 - Main view: also include the reference names when searching.
 - Main view: support for refreshing.
 - Main view: disable boundary commits by default. Use --boundary when
   they should be shown. (Debian bug 498628)
 - Stage view: add stage-next action to jump to next diff chunk that can
   be staged. By default bound to '@'.
 - Configure: check for the ncurses header files.
 - Add author-width option to customize the width of the author column.
   For example, put the following in ~/.tigrc: set author-width = 10

Bug fixes:

 - Fix regression when staging all diff chunks in a section.
 - Bind the maximize view action to 'O'; it conflicted with the
   keybinding to launch the merge tool in the status view.
 - Fix problem with $(cmd) usage in shell code. Some shells (jsh)
   installed as /bin/sh does not support it.
 - Do not show incomplete boundary commits when --no-walk is used.
 - Documentation: Rename gitlink macro to support AsciiDoc 8.2.3.
 - Ignore pipe reads with errno "Success" reported after a signals,
   for example when refreshing doing background loading.

tig-0.11
--------

Incompatibilities:

 - Remove parsing of deprecated options: -g, -l, -d.
 - The first seen '--' will stop option parsing and is passed to Git
   instead of breaking out of Tig's option parsing.

New features:

 - Blame view; bound to 'B' by default, reachable from the command line
   and the tree, status, and stage views.
 - Blame/main view: allow display of date, author, and references to be
   toggled on/off. Bound to 'D', 'A', and 'F' respectively.
 - Add action to maximize the current view.

Improvements:

 - Show the current branch in the status view.
 - Show local/light-weight tags.

Bug fixes:

 - Fix regressions for the pager mode.
 - Fix refreshing of the index with working directory info.

tig-0.10.1
----------

Improvements:

 - Status view: detect renamed files and show them with 'R'.
 - Status view: refresh the index to avoid "empty diffs".
 - Diff view: make diff headers more verbose to include e.g. committer.
 - Configure: check for the ncursesw library.

Bug fixes:

 - Fix UTF-8 handling for tag names and commit messages.
 - Fix the check for git-config(1) in configure to handle the case when
   Git has been installed using a libexecdir which is not in the path.
 - Fix replacing of SYSCONFDIR when installing from released tarballs.

tig-0.10
---------

Incompatibilities:

 - Deprecate most Tig specific command line options to make Tig more
   compatible with gitk. The deprecated options are: -g, -l, -d, and -S.
   Use of any of them will result in a warning being printed to stderr.
   Instead of '-S', use the new 'status' subcommand.
 - Make man page building depend on DocBook XSL version >= 1.72.0.
 - Install man pages in $(prefix)/share/man.
 - Implement the cherry pick action (bound to 'C') using new support for
   running external commands. This obsoletes the TIG_CHEERY_PICK
   environment variable

New features:

 - Add support for binding keys to external commands. To bind '.' to
   running git-commit(1), add the line: "bind generic . !git commit" to
   your ~/.tigrc. Each command can have replacement string such as
   %(commit), %(head), and %(blob), which are substituted before the
   command is run.
 - Add system-wide configuration file defaulting to $(prefix)/etc/tigrc.
 - Add the environment variables TIGRC_USER and TIGRC_SYSTEM to change
   user and system-wide configuration files, respectively.

Improvements:

 - Main view: color the revision graph.
 - Main view: show boundary commits; they are marked with '^' in the
   revision graph.
 - Tree view: add tree-parent action to jump to view of the parent tree.
   Bound to ',' by default.
 - Allow the default terminal colors to be overwritten. To use black
   text on white, add the line "color default white black" to your
   ~/.tigrc.
 - Misc. documentation improvements.

Bug fixes:

 - Use git-diff-index(1) and git-diff-files(1) instead of git-diff(1) to
   avoid running external diff drivers.
 - Use --no-color when calling git-log(1).
 - Fix crash when opening mergetool for lines that are not unmerged.

tig-0.9.1
---------

Incompatibilities:

 - Make the clean rule to never remove generated documentation files.
   Use the distclean rule for accomplishing this.

New features:

 - Add support for cherry-picking commits in the main view to the
   current branch. Bound to 'C' by default.

Improvements:

 - Add support for launching git-mergetool(1) from the status view.
   Bound to 'M' by default.
 - Add support for refreshing/reloading the status view
 - Detect working trees and disable the status view when it is missing.

Bug fixes:

 - Fix iconv() checking in configure.
 - Fix editor invocation to make paths relative to the project root.
 - Fix out-of-range current line when reloading the status view.
 - Include autoconf files in the tarball generated by `make dist`.

tig-0.9
-------

New features:

 - Add bash completion script for Tig (contrib/tig-completion.bash).
 - Add optional autoconf-based build infrastructure.
 - Add stage view for showing changes in the working tree and add
   support for staging individual diff chunks for commit.

Improvements:

 - Status view: allow all files in a section to be staged for commit.
 - Status view: Add support for opening files in an editor. Bound to 'e'
   by default.
 - Tree view: use a stack for remembering the lines for parent tree.