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fix(bash): Fix bash completion for suggestions that contain special characters.
Special characters include whitepace, so this is more general than
#1743. This should also fix #1740.
I added some test cases to cobra-completion-testing. This PR makes them
pass. It also doesn't trip any of the performance regression tests. I'm
happy to submit those tests as a PR as well.
- https://github.com/JeffFaer/cobra-completion-testing/tree/special_characters
- 52254c1a25
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bcfcff729e
commit
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1 changed files with 24 additions and 7 deletions
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@ -59,7 +59,10 @@ __%[1]s_get_completion_results() {
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# Prepare the command to request completions for the program.
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# Calling ${words[0]} instead of directly %[1]s allows handling aliases
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args=("${words[@]:1}")
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requestComp="${words[0]} %[2]s ${args[*]}"
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requestComp="${words[0]} %[2]s"
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if [[ "${#args[@]}" -gt 0 ]]; then
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requestComp+="$(printf " %%q" "${args[@]}")"
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fi
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lastParam=${words[$((${#words[@]}-1))]}
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lastChar=${lastParam:$((${#lastParam}-1)):1}
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@ -224,15 +227,24 @@ __%[1]s_handle_completion_types() {
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# completions at once on the command-line we must remove the descriptions.
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# https://github.com/spf13/cobra/issues/1508
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local tab=$'\t' comp
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while IFS='' read -r comp; do
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local matches=()
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for comp in "${completions[@]}"; do
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[[ -z $comp ]] && continue
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# Strip any description
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comp=${comp%%%%$tab*}
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# Only consider the completions that match
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if [[ $comp == "$cur"* ]]; then
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COMPREPLY+=("$comp")
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fi
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done < <(printf "%%s\n" "${completions[@]}")
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# Strictly speaking we could append directly to COMPREPLY here.
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# But there's a pretty big performance hit involved with
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# creating one subshell to printf %%q for each completion that
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# matches. Instead, batch all the matches up so we can quote
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# them all at once in a single printf call.
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matches+=( "$comp" )
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fi
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done
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while IFS='' read -r comp; do
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COMPREPLY+=( "$comp" )
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done < <(printf "%%q\n" "${matches[@]}")
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;;
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*)
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@ -247,7 +259,12 @@ __%[1]s_handle_standard_completion_case() {
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# Short circuit to optimize if we don't have descriptions
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if [[ "${completions[*]}" != *$tab* ]]; then
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IFS=$'\n' read -ra COMPREPLY -d '' < <(compgen -W "${completions[*]}" -- "$cur")
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# compgen's -W option respects shell quoting, so we need to escape.
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local compgen_words="$(printf "%%q\n" "${completions[@]}")"
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# compgen appears to respect shell quoting _after_ checking whether
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# they have the right prefix, so we also need to quote cur.
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local compgen_cur="$(printf "%%q" "${cur}")"
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IFS=$'\n' read -ra COMPREPLY -d '' < <(IFS=$'\n'; compgen -W "${compgen_words}" -- "${compgen_cur}")
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return 0
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fi
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@ -271,7 +288,7 @@ __%[1]s_handle_standard_completion_case() {
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__%[1]s_debug "COMPREPLY[0]: ${COMPREPLY[0]}"
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comp="${COMPREPLY[0]%%%%$tab*}"
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__%[1]s_debug "Removed description from single completion, which is now: ${comp}"
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COMPREPLY[0]=$comp
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COMPREPLY[0]="$(printf "%%q" "${comp}")"
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else # Format the descriptions
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__%[1]s_format_comp_descriptions $longest
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fi
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