worktree: improve message when creating a new worktree
Currently 'git worktree add' produces output like the following: Preparing ../foo (identifier foo) HEAD is now at 26da330922 <title> The '../foo' is the path where the worktree is created, which the user has just given on the command line. The identifier is an internal implementation detail, which is not particularly relevant for the user and indeed isn't mentioned explicitly anywhere in the man page. Instead of this message, print a message that gives the user a bit more detail of what exactly 'git worktree' is doing. There are various dwim modes which perform some magic under the hood, which should be helpful to users. Just from the output of the command it is not always visible to users what exactly has happened. Help the users a bit more by modifying the "Preparing ..." message and adding some additional information of what 'git worktree add' did under the hood, while not displaying the identifier anymore. Currently there are several different cases: - 'git worktree add -b ...' or 'git worktree add <path>', both of which create a new branch, either through the user explicitly requesting it, or through 'git worktree add' implicitly creating it. This will end up with the following output: Preparing worktree (new branch '<branch>') HEAD is now at 26da330922 <title> - 'git worktree add -B ...', which may either create a new branch if the branch with the given name does not exist yet, or resets an existing branch to the current HEAD, or the commit-ish given. Depending on which action is taken, we'll end up with the following output: Preparing worktree (resetting branch '<branch>'; was at caa68db14) HEAD is now at 26da330922 <title> or: Preparing worktree (new branch '<branch>') HEAD is now at 26da330922 <title> - 'git worktree add --detach' or 'git worktree add <path> <commit-ish>', both of which create a new worktree with a detached HEAD, for which we will print the following output: Preparing worktree (detached HEAD 26da330922) HEAD is now at 26da330922 <title> - 'git worktree add <path> <local-branch>', which checks out the branch and prints the following output: Preparing worktree (checking out '<local-branch>') HEAD is now at 47007d5 <title> Additionally currently the "Preparing ..." line is printed to stderr, while the "HEAD is now at ..." line is printed to stdout by 'git reset --hard', which is used internally by 'git worktree add'. Fix this inconsistency by printing the "Preparing ..." message to stdout as well. As "Preparing ..." is not an error, stdout also seems like the more appropriate output stream. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -301,8 +301,6 @@ static int add_worktree(const char *path, const char *refname,
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strbuf_addf(&sb, "%s/commondir", sb_repo.buf);
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write_file(sb.buf, "../..");
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fprintf_ln(stderr, _("Preparing %s (identifier %s)"), path, name);
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argv_array_pushf(&child_env, "%s=%s", GIT_DIR_ENVIRONMENT, sb_git.buf);
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argv_array_pushf(&child_env, "%s=%s", GIT_WORK_TREE_ENVIRONMENT, path);
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cp.git_cmd = 1;
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@ -355,6 +353,40 @@ done:
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return ret;
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}
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static void print_preparing_worktree_line(int detach,
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const char *branch,
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const char *new_branch,
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int force_new_branch)
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{
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if (force_new_branch) {
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struct commit *commit = lookup_commit_reference_by_name(new_branch);
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if (!commit)
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printf_ln(_("Preparing worktree (new branch '%s')"), new_branch);
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else
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printf_ln(_("Preparing worktree (resetting branch '%s'; was at %s)"),
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new_branch,
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find_unique_abbrev(commit->object.oid.hash,
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DEFAULT_ABBREV));
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} else if (new_branch) {
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printf_ln(_("Preparing worktree (new branch '%s')"), new_branch);
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} else {
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struct strbuf s = STRBUF_INIT;
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if (!detach && !strbuf_check_branch_ref(&s, branch) &&
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ref_exists(s.buf))
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printf_ln(_("Preparing worktree (checking out '%s')"),
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branch);
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else {
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struct commit *commit = lookup_commit_reference_by_name(branch);
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if (!commit)
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die(_("invalid reference: %s"), branch);
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printf_ln(_("Preparing worktree (detached HEAD %s)"),
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find_unique_abbrev(commit->object.oid.hash,
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DEFAULT_ABBREV));
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}
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strbuf_release(&s);
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}
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}
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static int add(int ac, const char **av, const char *prefix)
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{
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struct add_opts opts;
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@ -435,6 +467,8 @@ static int add(int ac, const char **av, const char *prefix)
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}
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}
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print_preparing_worktree_line(opts.detach, branch, new_branch, !!new_branch_force);
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if (new_branch) {
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struct child_process cp = CHILD_PROCESS_INIT;
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cp.git_cmd = 1;
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