Degrade gracefully on systems missing zsh/system module

When using async mode, stale background processes will not be cancelled
when a new one starts. This shouldn't cause any real issues since the
processes should eventually finish and be cleaned up anyway, and
removing the handler with `zle -F` means that stale suggestions should
never be shown.
This commit is contained in:
Eric Freese 2019-06-19 13:35:54 -06:00
parent 112dd3e3c7
commit a437544cc5
2 changed files with 32 additions and 26 deletions

View File

@ -3,9 +3,9 @@
# Async #
#--------------------------------------------------------------------#
zmodload zsh/system
_zsh_autosuggest_async_request() {
zmodload zsh/system 2>/dev/null # For `$sysparams`
typeset -g _ZSH_AUTOSUGGEST_ASYNC_FD _ZSH_AUTOSUGGEST_CHILD_PID
# If we've got a pending request, cancel it
@ -14,6 +14,8 @@ _zsh_autosuggest_async_request() {
exec {_ZSH_AUTOSUGGEST_ASYNC_FD}<&-
zle -F $_ZSH_AUTOSUGGEST_ASYNC_FD
# We won't know the pid unless the user has zsh/system module installed
if [[ -n "$_ZSH_AUTOSUGGEST_CHILD_PID" ]]; then
# Zsh will make a new process group for the child process only if job
# control is enabled (MONITOR option)
if [[ -o MONITOR ]]; then
@ -27,6 +29,7 @@ _zsh_autosuggest_async_request() {
kill -TERM $_ZSH_AUTOSUGGEST_CHILD_PID 2>/dev/null
fi
fi
fi
# Fork a process to fetch a suggestion and open a pipe to read from it
exec {_ZSH_AUTOSUGGEST_ASYNC_FD}< <(

View File

@ -726,9 +726,9 @@ _zsh_autosuggest_fetch_suggestion() {
# Async #
#--------------------------------------------------------------------#
zmodload zsh/system
_zsh_autosuggest_async_request() {
zmodload zsh/system 2>/dev/null # For `$sysparams`
typeset -g _ZSH_AUTOSUGGEST_ASYNC_FD _ZSH_AUTOSUGGEST_CHILD_PID
# If we've got a pending request, cancel it
@ -737,6 +737,8 @@ _zsh_autosuggest_async_request() {
exec {_ZSH_AUTOSUGGEST_ASYNC_FD}<&-
zle -F $_ZSH_AUTOSUGGEST_ASYNC_FD
# We won't know the pid unless the user has zsh/system module installed
if [[ -n "$_ZSH_AUTOSUGGEST_CHILD_PID" ]]; then
# Zsh will make a new process group for the child process only if job
# control is enabled (MONITOR option)
if [[ -o MONITOR ]]; then
@ -750,6 +752,7 @@ _zsh_autosuggest_async_request() {
kill -TERM $_ZSH_AUTOSUGGEST_CHILD_PID 2>/dev/null
fi
fi
fi
# Fork a process to fetch a suggestion and open a pipe to read from it
exec {_ZSH_AUTOSUGGEST_ASYNC_FD}< <(