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Discard "deleted" cache entries after using them to update the working tree
Way back in read-tree.c, we used a mode 0 cache entry to indicate that an entry had been deleted, so that the update code would remove the working tree file, and we would just skip it when writing out the index file afterward. These days, unpack_trees is a library function, and it is still leaving these entries in the active cache. Furthermore, unpack_trees doesn't correctly ignore those entries, and who knows what other code wouldn't expect them to be there, but just isn't yet called after a call to unpack_trees. To avoid having other code trip over these entries, have check_updates() remove them after it removes the working tree files. While we're at it, simplify the loop in check_updates(), and avoid passing global variables as parameters to check_updates(): there is only one call site anyway. Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
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@ -288,16 +288,16 @@ static void unlink_entry(char *name, char *last_symlink)
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}
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static struct checkout state;
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static void check_updates(struct cache_entry **src, int nr,
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struct unpack_trees_options *o)
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static void check_updates(struct unpack_trees_options *o)
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{
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unsigned cnt = 0, total = 0;
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struct progress *progress = NULL;
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char last_symlink[PATH_MAX];
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int i;
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if (o->update && o->verbose_update) {
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for (total = cnt = 0; cnt < nr; cnt++) {
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struct cache_entry *ce = src[cnt];
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for (total = cnt = 0; cnt < active_nr; cnt++) {
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struct cache_entry *ce = active_cache[cnt];
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if (ce->ce_flags & (CE_UPDATE | CE_REMOVE))
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total++;
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}
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@ -308,14 +308,16 @@ static void check_updates(struct cache_entry **src, int nr,
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}
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*last_symlink = '\0';
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while (nr--) {
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struct cache_entry *ce = *src++;
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for (i = 0; i < active_nr; i++) {
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struct cache_entry *ce = active_cache[i];
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if (ce->ce_flags & (CE_UPDATE | CE_REMOVE))
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display_progress(progress, ++cnt);
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if (ce->ce_flags & CE_REMOVE) {
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if (o->update)
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unlink_entry(ce->name, last_symlink);
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remove_cache_entry_at(i);
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i--;
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continue;
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}
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if (ce->ce_flags & CE_UPDATE) {
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@ -374,7 +376,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
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error("Merge requires file-level merging");
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}
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check_updates(active_cache, active_nr, o);
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check_updates(o);
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return 0;
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}
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