Re: [PATCH 09/12] merge-tree: provide a list of which files have conflicts

>
> On Sat, Jan 22 2022, Elijah Newren via GitGitGadget wrote:
>
> > From: Elijah Newren <newren@gmail.com>
> >
> > Callers of `git merge-tree --write-tree` will often want to know which
> > files had conflicts.  While they could potentially attempt to parse the
> > CONFLICT notices printed, those messages are not meant to be machine
> > readable.  Provide a simpler mechanism of just printing the files (in
> > the same format as `git ls-files` with quoting, but restricted to
> > [...]
> > diff --git a/builtin/merge-tree.c b/builtin/merge-tree.c
> > index 560640ad911..d8eeeb3f306 100644
> > --- a/builtin/merge-tree.c
> > +++ b/builtin/merge-tree.c
> > @@ -11,6 +11,9 @@
> >  #include "blob.h"
> >  #include "exec-cmd.h"
> >  #include "merge-blobs.h"
> > +#include "quote.h"
> > +
> > +static int line_termination = '\n';
>
> But unlike ls-files we don't do anything with line_termination as a !=
> '\n', maybe in a later commit?
>
> >  struct merge_list {
> >       struct merge_list *next;
> > @@ -395,7 +398,8 @@ struct merge_tree_options {
> >  };
> >
> >  static int real_merge(struct merge_tree_options *o,
> > -                   const char *branch1, const char *branch2)
> > +                   const char *branch1, const char *branch2,
> > +                   const char *prefix)
> >  {
> >       struct commit *parent1, *parent2;
> >       struct commit_list *common;
> > @@ -449,6 +453,22 @@ static int real_merge(struct merge_tree_options *o,
> >               o->show_messages = !result.clean;
> >
> >       printf("%s\n", oid_to_hex(&result.tree->object.oid));
> > +     if (!result.clean) {
> > +             struct string_list conflicted_files = STRING_LIST_INIT_NODUP;
> > +             const char *last = NULL;
> > +             int i;
> > +
> > +             merge_get_conflicted_files(&result, &conflicted_files);
> > +             for (i = 0; i < conflicted_files.nr; i++) {
> > +                     const char *name = conflicted_files.items[i].string;
> > +                     if (last && !strcmp(last, name))
> > +                             continue;
> > +                     write_name_quoted_relative(
> > +                             name, prefix, stdout, line_termination);
>
> But here it's never \0 or whatever.