%(head) is empty when starting tig with branch name given

[ds82]

I have this binding to start a code review in neovim directly from the selected commit in tig:

bind main v !>nvim +'DiffviewOpen %(commit)~1..%(head)' 

Thing is .. that only works if the branch I want to review is currently checked out or if I use tig -> view-refs, select the branch and commit and then use the keybind.

If I start tig with a branch directly, e.g. tig origin/some/branch and select a commit, the %(head) variable contains the wrong commit (the one of the currently checked out branch, not the branch I called tig with).

Edit: I also tried %(branch) and %(refname) but they wont work either.

[koutcher]

%(revargs) should do the job for your binding, but I agree it would be best to initialize %(head) from a revision in %(revargs) as it may also contain other revision arguments like --all.

[ds82]

hmm ..

bind main V !echo "%(commit) %(head) %(revargs)"

results in the error Failed to format arguments

[koutcher]

bind main V !echo %(commit) %(head) %(revargs) works but your original binding will also fail with %(revargs) due to 's. No luck with current Tig version, the following patch initialises %(head) from command line arguments:

diff --git a/src/tig.c b/src/tig.c
index 1b115d23..5dcb461a 100644
--- a/src/tig.c
+++ b/src/tig.c
@@ -427,8 +427,10 @@ filter_options(const char *argv[], enum request request)
                                argv[flags_pos++] = argv[next++];
                else if (argv_parse_rev_flag(arg, NULL))
                        argv_append(&opt_rev_args, arg);
-               else
+               else {
                        argv[flags_pos++] = arg;
+                       string_copy_rev(argv_env.head, arg);
+               }
        }

        argv[flags_pos] = NULL;