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| -rw-r--r-- | doc/tips/Faster_bash_autocompletion_with_big_annex_repos.mdwn | 50 |
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diff --git a/doc/tips/Faster_bash_autocompletion_with_big_annex_repos.mdwn b/doc/tips/Faster_bash_autocompletion_with_big_annex_repos.mdwn new file mode 100644 index 000000000..ded86df72 --- /dev/null +++ b/doc/tips/Faster_bash_autocompletion_with_big_annex_repos.mdwn @@ -0,0 +1,50 @@ +I'm currently using git annex to manage my entire file collection +(including tons of music and books) and I noticed how slow +autocompletion has become for files in the index (say for git add). +The main offender is a while-read-case-echo bash loop in +`__git_index_files` that can be readily substituted with a much faster +sed invocation. Here is my benchmark: + +``` +__git_index_files () +{ + local dir="$(__gitdir)" root="${2-.}" file; + if [ -d "$dir" ]; then + __git_ls_files_helper "$root" "$1" | while read -r file; do + case "$file" in + ?*/*) + echo "${file%%/*}" + ;; + *) + echo "$file" + ;; + esac; + done | sort | uniq; + fi +} + +time __git_index_files > /dev/null + + +__git_index_files () +{ + local dir="$(__gitdir)" root="${2-.}" file; + if [ -d "$dir" ]; then + __git_ls_files_helper "$root" "$1" | \ + sed -r 's@^"?([^/]+)/.*$@\1@' | sort | uniq + fi +} + +time __git_index_files > /dev/null + +real 0m0.830s +user 0m0.597s +sys 0m0.310s + +real 0m0.345s +user 0m0.357s +sys 0m0.000s +``` + +So you might redefine `__git_index_files` as above in your .bashrc after sourcing the git autocomplete script. + |