From 46233c40204756df3a927cab3b429df54f8e3d8c Mon Sep 17 00:00:00 2001 From: Daniel Shahaf Date: Fri, 10 Mar 2017 09:05:16 +0000 Subject: 40817: __git_recent_branches: Retrieve less data, but faster. By replacing the --grep-reflog=needle argument with a ${(M)...:#needle} filter, we retrieve less data from the reflog, and consequently run (on my test cases) 16% to 40% faster. The trade-off is that we retrieve less data: instead of retrieving the 1000 most recent 'checkout' operations, we retrieve the most recent 1000 operations, which would include fewer than 1000 checkout operations. Also change [[:xdigit:]] to [0-9a-f] since it's faster, however, the absolute gain from this is minor compared to the cost of 'git reflog'. --- Completion/Unix/Command/_git | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'Completion') diff --git a/Completion/Unix/Command/_git b/Completion/Unix/Command/_git index 43cbc46ec..73daedcc9 100644 --- a/Completion/Unix/Command/_git +++ b/Completion/Unix/Command/_git @@ -6126,12 +6126,13 @@ __git_recent_branches__names() # 2. Extracts the move-source from each # 3. Eliminates duplicates # 4. Eliminates commit hashes (leaving only ref names) + # [This step is done again by the caller.] # # See workers/38592 for an equivalent long-hand implementation, and the rest # of that thread for why this implementation was chosen instead. # # Note: since we obtain the "from" part of the reflog, we only obtain heads, not tags. - reply=(${${(u)${${(0)"$(_call_program reflog git reflog -1000 -z --grep-reflog='\^checkout:\ moving\ from\ ' --pretty='%gs')"}#checkout: moving from }%% *}:#[[:xdigit:]](#c40)}) + reply=(${${(u)${${(M)${(0)"$(_call_program reflog git reflog -1000 -z --pretty='%gs')"}:#(#s)checkout: moving from *}#checkout: moving from }%% *}:#[0-9a-f](#c40)}) } (( $+functions[__git_recent_branches] )) || -- cgit 1.4.1