Fix bash completion bugs (#280)

Makefile

@@ -17,10 +17,8 @@ GOARCH := $(shell go env GOARCH)
 endif
 
 # go.opentelemetry.io/otel/sdk/metric@v0.31.0 - there are breaking changes in v0.32.0.
-# github.com/urfave/cli/v2@v2.23.6             - newer version regressed reading JSON values in subcommands. TODO apply this to subcommands https://github.com/urfave/cli/commit/dc6dfb7851fbaa6519a9691ac921c9c7e072abc8#diff-6c4b6ed7dc8834cef100f50dae61c30ffe7775a3f3f6f5a557517cb740c44a2dR237
 PINNED_DEPENDENCIES := \
-	go.opentelemetry.io/otel/sdk/metric@v0.31.0 \
-	github.com/urfave/cli/v2@v2.23.6
+	go.opentelemetry.io/otel/sdk/metric@v0.31.0
 
 ##### Build #####
 

README.md

@@ -169,7 +169,7 @@ See the CLI docs for a [list of env vars](https://docs.temporal.io/cli#environme
 
 The Temporal CLI has the capability to auto-complete commands.
 
-Running `temporal completion SHELL` will output the related completion SHELL code.
+Running `temporal completion SHELL` will output completion setup code for the given shell.
 
 ### zsh auto-completion
 
@@ -187,7 +187,7 @@ If you're running auto-completion from the terminal, run the command below:
 echo 'source <(temporal completion zsh)' >> ~/.zshrc
 ```
 
-After setting the variable, run:
+After editing the file, run:
 
 `source ~/.zshrc`.
 
@@ -219,6 +219,12 @@ It should say `_init_completion is a function` and print the function.
 
 Enable completion for Temporal by adding the following code to your bash file:
 
+```bash
+source <(temporal completion bash)
+```
+
+In an existing terminal, you can do that by running:
+
 ```bash
 echo 'source <(temporal completion bash)' >> ~/.bashrc
 source ~/.bashrc
@@ -227,8 +233,8 @@ source ~/.bashrc
 Now test by typing `temporal`, space, and then tab twice. You should see:
 
 ```bash
-$ temporal 
-activity    completion  h           operator    server      workflow    
+$ temporal
+activity    completion  h           operator    server      workflow
 batch       env         help        schedule    task-queue
 ```
 

completion/completion.go

@@ -7,45 +7,56 @@ import (
 	"github.com/urfave/cli/v2"
 )
 
-// taken from https://github.com/urfave/cli/blob/master/autocomplete/zsh_autocomplete
-var zsh_script = `
-#compdef temporal
+// taken from https://github.com/urfave/cli/blob/v2-maint/autocomplete/zsh_autocomplete
+var zsh_script = `#compdef temporal
 _cli_zsh_autocomplete() {
   local -a opts
   local cur
   cur=${words[-1]}
   if [[ "$cur" == "-"* ]]; then
-    opts=("${(@f)$(_CLI_ZSH_AUTOCOMPLETE_HACK=1 ${words[@]:0:#words[@]-1} ${cur} --generate-bash-completion)}")
+    opts=("${(@f)$(${words[@]:0:#words[@]-1} ${cur} --generate-bash-completion)}")
   else
-    opts=("${(@f)$(_CLI_ZSH_AUTOCOMPLETE_HACK=1 ${words[@]:0:#words[@]-1} --generate-bash-completion)}")
+    opts=("${(@f)$(${words[@]:0:#words[@]-1} --generate-bash-completion)}")
   fi
   if [[ "${opts[1]}" != "" ]]; then
     _describe 'values' opts
   else
     _files
   fi
-  return
 }
 compdef _cli_zsh_autocomplete temporal
 `
 
-var bash_script = `
-#! /bin/bash
+// taken from https://github.com/urfave/cli/blob/v2-maint/autocomplete/bash_autocomplete
+var bash_script = `#! /bin/bash
+# Macs have bash3 for which the bash-completion package doesn't include
+# _init_completion. This is a minimal version of that function.
+_cli_init_completion() {
+  COMPREPLY=()
+  _get_comp_words_by_ref "$@" cur prev words cword
+}
 _cli_bash_autocomplete() {
   if [[ "${COMP_WORDS[0]}" != "source" ]]; then
-    local cur opts base
+    local cur opts base words
     COMPREPLY=()
     cur="${COMP_WORDS[COMP_CWORD]}"
+    if declare -F _init_completion >/dev/null 2>&1; then
+      _init_completion -n "=:" || return
+    else
+      _cli_init_completion -n "=:" || return
+    fi
+    words=("${words[@]:0:$cword}")
     if [[ "$cur" == "-"* ]]; then
-      opts=$( ${COMP_WORDS[@]:0:$COMP_CWORD} ${cur} --generate-bash-completion )
+      requestComp="${words[*]} ${cur} --generate-bash-completion"
     else
-      opts=$( ${COMP_WORDS[@]:0:$COMP_CWORD} --generate-bash-completion )
+      requestComp="${words[*]} --generate-bash-completion"
     fi
-    COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+    opts=$(eval "${requestComp}" 2>/dev/null)
+    COMPREPLY=($(compgen -W "${opts}" -- ${cur}))
     return 0
   fi
 }
-complete -o bashdefault -o default -o nospace -F _cli_bash_autocomplete temporal
+complete -o bashdefault -o default -F _cli_bash_autocomplete temporal
 `
 
 func NewCompletionCommands() []*cli.Command {

go.mod

@@ -15,7 +15,7 @@ require (
 	github.com/stretchr/testify v1.8.4
 	github.com/temporalio/tctl-kit v0.0.0-20230328153839-577f95d16fa0
 	github.com/temporalio/ui-server/v2 v2.16.2
-	github.com/urfave/cli/v2 v2.23.6
+	github.com/urfave/cli/v2 v2.25.7
 	go.temporal.io/api v1.23.0
 	go.temporal.io/sdk v1.23.1
 	go.temporal.io/sdk/contrib/tools/workflowcheck v0.0.0-20230328164709-88a40de39c33

go.sum

@@ -1090,8 +1090,8 @@ github.com/uber/jaeger-client-go v2.22.1+incompatible/go.mod h1:WVhlPFC8FDjOFMMW
 github.com/uber/jaeger-client-go v2.30.0+incompatible h1:D6wyKGCecFaSRUpo8lCVbaOOb6ThwMmTEbhRwtKR97o=
 github.com/uber/jaeger-lib v2.4.1+incompatible h1:td4jdvLcExb4cBISKIpHuGoVXh+dVKhn2Um6rjCsSsg=
 github.com/uber/jaeger-lib v2.4.1+incompatible/go.mod h1:ComeNDZlWwrWnDv8aPp0Ba6+uUTzImX/AauajbLI56U=
-github.com/urfave/cli/v2 v2.23.6 h1:iWmtKD+prGo1nKUtLO0Wg4z9esfBM4rAV4QRLQiEmJ4=
-github.com/urfave/cli/v2 v2.23.6/go.mod h1:GHupkWPMM0M/sj1a2b4wUrWBPzazNrIjouW6fmdJLxc=
+github.com/urfave/cli/v2 v2.25.7 h1:VAzn5oq403l5pHjc4OhD54+XGO9cdKVL/7lDjF+iKUs=
+github.com/urfave/cli/v2 v2.25.7/go.mod h1:8qnjx1vcq5s2/wpsqoZFndg2CE5tNFyrTvS6SinrnYQ=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasttemplate v1.2.1 h1:TVEnxayobAdVkhQfrfes2IzOB6o+z4roRkPF52WA1u4=