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destupdate: move the check related to the "clean" logic in the function...
destupdate: move the check related to the "clean" logic in the function We want this function to exactly predict the behavior for update. Moreover, we would like to remove all high level behavior logic out of the merge module so this is a step forward. Now that the 'destupdate' function both compute and validate the destination, we can directly use it at the command level, ensuring that the 'hg update' command never call 'merge.update' without a defined destination. This is a first (but significant) step toward having 'merge.update' always feed with a properly validated destination and free of high level logic.
Mads Kiilerich - - Load All Authors

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r20245:4edd179f default
r26628:45b86dba default
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revisions.txt
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Mercurial supports several ways to specify individual revisions.
A plain integer is treated as a revision number. Negative integers are
treated as sequential offsets from the tip, with -1 denoting the tip,
-2 denoting the revision prior to the tip, and so forth.
A 40-digit hexadecimal string is treated as a unique revision
identifier.
A hexadecimal string less than 40 characters long is treated as a
unique revision identifier and is referred to as a short-form
identifier. A short-form identifier is only valid if it is the prefix
of exactly one full-length identifier.
Any other string is treated as a bookmark, tag, or branch name. A
bookmark is a movable pointer to a revision. A tag is a permanent name
associated with a revision. A branch name denotes the tipmost open branch head
of that branch - or if they are all closed, the tipmost closed head of the
branch. Bookmark, tag, and branch names must not contain the ":" character.
The reserved name "tip" always identifies the most recent revision.
The reserved name "null" indicates the null revision. This is the
revision of an empty repository, and the parent of revision 0.
The reserved name "." indicates the working directory parent. If no
working directory is checked out, it is equivalent to null. If an
uncommitted merge is in progress, "." is the revision of the first
parent.