[Enhancement] When comparing 2 commits, use same feature-set as when comparing 2 branches/tags

[goran-w]

If we select 2 branches (or 2 tags) in sidebar and select "Compare selected 2 branches" (or "Compare 2 tags") from context menu, then the resulting Compare window has some extra features (which are not present in the "embedded" comparison view resulting from selecting 2 commits in the log-graph) :

• The left/right (red/green-framed) commit-details boxes show branch/tag "badges" (and if one of them is the current branch it also displays a checkmark next to it).
• There's a special Changes/Commits selector, which (when switched to Commits) changes the main panel to show two vertically stacked panels for Left-only and Right-only commits.
• If one of the 2 sides (left/right) is the "current" branch/HEAD, then we can select commits from the other side and choose "Cherry-pick..." from context menu.

NOTE: Parts of this functionality was briefly discussed here.

It would be great if this functionality could be "unified", to be available also when simply selecting 2 commits in the log-graph (which shows a similar but less capable comparison view ) :

• Show branch/tag badges in the commit-details boxes (when applicable), including the checkmark for current branch (or detached HEAD). Currently, only a HEAD badge (without checkmark) is shown for current branch, it would be better to show actual branch name(s).
• Display the Changes/Commits selector (at least whenever applicable).
• Include the "Cherry-pick..." functionality (when possible).

[love-linger]

The left/right (red/green-framed) commit-details boxes show branch/tag "badges" (and if one of them is the current branch it also displays a checkmark next to it).

It's because there is not enough space to show all decorators of selected commit. In Compare window, we know the two ref names to compare, so we only need display them. But in embedded revision compare view, a commit may contains more than one decorators or the name of one decorator (ref) is too long.

There's a special Changes/Commits selector, which (when switched to Commits) changes the main panel to show two vertically stacked panels for Left-only and Right-only commits.
If one of the 2 sides (left/right) is the "current" branch/HEAD, then we can select commits from the other side and choose "Cherry-pick..." from context menu.

Yes. The COMMITS page is designed to get the different commits and allow users to directly cherry-pick some commits from another branch when it is possible. But in embedded revision compare view:

• The vertical space is limitted
• It's not possible to view the commit details (In Compare window, when you select a commit, the main window will navigate to that commit and shows the detail information. That helps user to select the commit to cherry-pick)
• Even if we provided this feature, after cherry-picking one commit, the history commit list will change and the selection of commits, then the revision compare view, because it depends on the history commit list above.

[love-linger]

If we select 2 branches (or 2 tags) in sidebar and select "Compare selected 2 branches" (or "Compare 2 tags") from context menu, then the resulting Compare window has some extra features

TIPS: you can compare any refs, for example, compare a branch with a tag, by one of following ways

• Select a branch or tag in left sidebar, then use the context menu Compare with...
• Press Ctrl+Shift+P/Cmd+Shift+P, then select Compare...