Backport VC improvements from trunk.
* vc/log-edit.el (log-edit-rewrite-fixes): New var. (log-edit-author): New dynamic var. (log-edit-changelog-ours-p, log-edit-insert-changelog-entries): Use it to return the author if different from committer. (log-edit-insert-changelog): Use them to add Author: and Fixes headers. * vc/vc-hooks.el (vc-default-mode-line-string): Doc fix. * vc/vc.el (vc-deduce-backend): New fun. Handle diff buffers. (vc-root-diff, vc-print-root-log, vc-log-incoming) (vc-log-outgoing): Use it. (vc-diff-internal): Set diff-vc-backend. * vc/diff-mode.el (diff-vc-backend): New var. * vc/vc.el (vc-diff-internal): Set `revert-buffer-function' buffer-locally to lambda that re-runs the vc diff command. (Bug#6447) * vc/log-view.el (log-view-mode-map): Bind revert-buffer. Make 'g' (AKA revert-buffer) rerun VC log, log-incoming and log-outgoing commands. * vc/vc.el (vc-log-internal-common): Add a new argument and use it to create a buffer local revert-buffer-function variable. (vc-print-log-internal, vc-log-incoming, vc-log-outgoing): Pass a revert-buffer-function lambda. Improve VC create/retrieve tag/branch. * vc.el (vc-create-tag): Do not read the directory name for VCs with repository revision granularity. Adjust the tag/branch prompt. Reset VC properties. (vc-retrieve-tag): Do not read the directory name for VCs with repository revision granularity. Reset VC properties. Add optional support for resetting VC properties. * vc-dispatcher.el (vc-resynch-window): Add new optional argument, call vc-file-clearprops when true. (vc-resynch-buffer): Add new optional argument, pass it down. (vc-resynch-buffers-in-directory): Likewise. Improve support for special markup in the VC commit message. * vc-mtn.el (vc-mtn-checkin): Support Author: and Date: markup. * vc-hg.el (vc-hg-checkin): Add support for Date:. * vc-git.el (vc-git-checkin): * vc-bzr.el (vc-bzr-checkin): Likewise. Add support for vc-log-incoming, improve vc-log-outgoing for Git. * vc-git.el (vc-git-log-view-mode): Fix font lock for incoming/outgoing logs. (vc-git-log-outgoing, vc-git-log-incoming): New functions. * vc-git.el (vc-git-log-outgoing): Use the same format as the short log. (vc-git-log-incoming): Likewise. Run "git fetch" before the log command Add bindings for vc-log-incoming and vc-log-outgoing. * vc-hooks.el (vc-prefix-map): Add bindings for vc-log-incoming and vc-log-outgoing. * vc-dir.el (vc-dir-menu-map): Add menu bindings for vc-log-incoming and vc-log-outgoing. Improve state updating for VC tag commands. * vc.el (vc-create-tag, vc-retrieve-tag): Call vc-resynch-buffer to update the state of all buffers in the directory. * vc-dir.el (vc-dir): Don't pop-up-windows. (Bug#6204) * vc.el (vc-checkin, vc-modify-change-comment): Adjust to new vc-start/finish-logentry. (vc-find-conflicted-file): New command. (vc-transfer-file): Adjust to new vc-checkin. (vc-next-action): Improve scoping. * vc-git.el (vc-git-checkin): Use log-edit-extract-headers. (vc-git-commits-coding-system): Rename from git-commits-coding-system. * vc-dispatcher.el (vc-log-edit): Shorten names for log-edit-show-files. * vc-bzr.el (vc-bzr-checkin): Use log-edit-extract-headers. (vc-bzr-conflicted-files): New function. * log-edit.el (log-edit-summary, log-edit-header) (log-edit-unknown-header): New faces. (log-edit-headers-alist): New var. (log-edit-header-contents-regexp): New const. (log-edit-match-to-eoh): New function. (log-edit-font-lock-keywords): Use them. (log-edit): Insert a "Summary:" header as default. (log-edit-mode): Mark font-lock rules as case-insensitive. (log-edit-done): Cleanup headers. (log-edit-extract-headers): New function to replace it. * vc-dispatcher.el (vc-finish-logentry): Don't mess so badly with the windows/frames. * vc-bzr.el (vc-bzr-shelve-apply): Don't use *vc-bzr-shelve*. * vc-dir.el (vc-dir-kill-line): New command. (vc-dir-mode-map): Bind it to C-k. (vc-dir-headers): Abbreviate the working dir. * vc-git.el (vc-git-revision-table): Include remote branches. New VC methods: vc-log-incoming and vc-log-outgoing. * vc.el (vc-print-log-setup-buttons, vc-log-internal-common) (vc-incoming-outgoing-internal, vc-log-incoming, vc-log-outgoing): New functions. (vc-print-log-internal): Just call vc-log-internal-common. (vc-log-view-type): New permanent local variable. * vc-hooks.el (vc-menu-map): Bind vc-log-incoming and vc-log-outgoing. * vc-bzr.el (vc-bzr-log-view-mode): Use vc-log-view-type instead of the dynamic bound vc-short-log. (vc-bzr-log-incoming, vc-bzr-log-outgoing): New functions. * vc-git.el (vc-git-log-outgoing): New function. (vc-git-log-view-mode): Use vc-log-view-type instead of the dynamic bound vc-short-log. * vc-hg.el (vc-hg-log-view-mode): Use vc-log-view-type instead of the dynamic bound vc-short-log. Highlight the tag. (vc-hg-log-incoming, vc-hg-log-outgoing): New functions. (vc-hg-outgoing, vc-hg-incoming, vc-hg-outgoing-mode): (vc-hg-incoming-mode): Remove. (vc-hg-extra-menu-map): Do not bind vc-hg-incoming and vc-hg-outgoing. Fix default-directory for vc-root-diff. * vc.el (vc-root-diff): Bind default-directory to the root directory for the diff command. * vc-hg.el (vc-hg-push, vc-hg-pull): Use `apply' when calling `vc-hg-command' with a list of flags. * vc-bzr.el (vc-bzr-log-edit-mode): Add --fixes support to log-edit-before-checkin-process. * vc.el (vc-modify-change-comment): Pass MODE to vc-start-logentry. * vc-bzr.el, vc-hg.el (log-edit-mode): Declare. * vc-dispatcher.el (vc-start-logentry): Doc fix. (log-view-process-buffer, log-edit-extra-flags): Declare. Add special markup processing for commit logs. * log-edit.el (log-edit): Add new argument MODE. Use that mode when non-nil instead of the log-view-mode. * vc.el (vc-default-log-edit-mode): New function. * vc-dispatcher.el (vc-log-edit): Add a mode argument, pass it to log-edit. Support for shelving snapshots and for showing shelves. * vc-bzr.el (vc-bzr-shelve-show, vc-bzr-shelve-show-at-point) (vc-bzr-shelve-apply-and-keep-at-point, vc-bzr-shelve-snapshot): New functions. (vc-bzr-shelve-map, vc-bzr-shelve-menu-map) (vc-bzr-extra-menu-map): Map them.
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