[PATCH 12/15] sequencer: handle multi-byte comment characters when writing todo list

We already match multi-byte comment characters in parse_insn_line(), thanks to the previous commit, yielding a TODO_COMMENT entry. But in todo_list_to_strbuf(), we may call command_to_char() to convert that back into something we can output.

We can't just return comment_line_char anymore, since it may require multiple bytes. Instead, we'll return "0" for this case, which is the same thing we'd return for a command which does not have a single-letter abbreviation (e.g., "revert" or "noop"). In that case the caller then falls back to outputting the full name via command_to_string(). So we can handle TODO_COMMENT there, returning the full string.

Note that there are many other callers of command_to_string(), which will now behave differently if they pass TODO_COMMENT. But we would not expect that to happen; prior to this commit, the function just calls die() in this case. And looking at those callers, that makes sense; e.g., do_pick_commit() will only be called when servicing a pick command, and should never be called for a comment in the first place.

Signed-off-by: Jeff King <peff@peff.net>
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 sequencer.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)