*  Added the ability to sign check-ins with SSH keys.
  *  Issue a warning if a user tries to commit on a check-in where the
     branch has been changed.
  *  When a merge conflict occurs, a new section is added to the conflict
     text that shows Fossil's suggested resolution to the conflict.
  *  Add the "Hide diffs/Show diffs" toggle to web-UI diff pages that show
     diffs of multiple files.
  *  Deprecate the --comfmtflags and --comment-format global options and
     no longer list them in the built-in help, but keep them working for
     backwards compatibility.
     Alternative TTY comment formatting can still be specified using the
     [/help?cmd=comment-format|comment-format setting], if desired.  The
     default comment format is now called "canonical", not "legacy".
  *  Enhancements to the [/help?cmd=/timeline|/timeline page]:
     <ol type="a">
     <li> Added the "ml=" ("Merge-in List") query parameter that works
          like "rl=" ("Related List") but adds "mionly" style related

`--comfmtflags NUMBER`: Specify flags that control how check-in comments
and certain other text outputs are formatted for display. The flags are
individual bits in `NUMBER`, which must be specified in base 10:

  * _0_ — Uses the revised algorithm with no special handling.

  * _1_ — Uses the canonical algorithm, other flags are ignored.

  * _2_ — Trims leading and trailing carriage-returns and line-feeds
        where they do not materially impact pre-existing formatting
        (i.e. at the start of the comment string _and_ right before
        line indentation).

  * _4_ — Trims leading and trailing spaces where they do not materially
        impact the pre-existing formatting (i.e. at the start of the
        comment string _and_ right before line indentation).

  * _8_ — Attempts to break lines on word boundaries while honoring the
        logical line length.

  * _16_ — Looks for the original comment text within the text being
         printed.  Upon matching, a new line will be emitted, thus
         preserving more of the pre-existing formatting.


`--comment-format NUMBER`: Alias for `--comfmtflags NUMBER`.


> NOTE: As of Fossil version 2.26, use of the `--comfmtflags` and
> `--comment-format` options is no longer recommended and they are
> no longer documented, but retained for backwards compatibility.


`--errorlog ERRLOG`: Name a file to which fossil will log panics,
errors, and warnings.


`--help`: If `--help` is found anywhere on the command line, translate
the command to `fossil help cmdname` where `cmdname` is the first

`FOSSIL_HOME`, `LOCALAPPDATA` (Windows), `APPDATA` (Windows),
`HOMEDRIVE` and `HOMEPATH` (Windows, used together), and `HOME` is
used as the location of the `~/.fossil` file.

`LOGNAME`: Name of the logged in user on many Unix-like platforms.
Used as the fossil user name if `FOSSIL_USER` is not specified. See
the discussion of Fossil Username below for a lot more detail.

`NO_COLOR`: If defined and not set to a `false` value (i.e. "off", "no",
"false", "0"), the `fossil search` command skips colorization of console
output using ANSI escape codes (VT100).

`PATH`: Used by most platforms to locate programs invoked without a
fully qualified name. Explicitly used by `fossil ui` on certain platforms
to choose the browser to launch.

`PATH_INFO`: If defined, included in error log messages.

will happen on all platforms.


### Web browser

Occasionally, fossil wants to launch a web browser for the user, most
obviously as part of the `fossil ui` command. In that specific case,
the browser is launched pointing at the web server started by
`fossil ui` listening on a private TCP port.

On all platforms, if the local or global settings `web-browser` is
set, that is the command used to open a URL.

Otherwise, the specific actions vary by platform.

On Unix-like platforms other than Apple's, it looks for the first