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https://github.com/mawww/kakoune.git
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Also check shell parameters for kak_* references
This makes it easier to pass shell fragments as arguments so that %sh{ eval "$@" } just works even if arguments refer to Kakoune's vars.
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@ -3,6 +3,10 @@
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This changelog contains major and/or breaking changes to Kakoune between
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released versions.
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== Development version
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* Expose env vars that are mentionned in the arguments passed to shell expansions
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== Kakoune 2024.05.18
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* Fixed tests on Alpine Linux and *BSD
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@ -146,14 +146,16 @@ and unquote them, then execute the resulting `set` command, which sets
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the shell's argument variables to the items from `$kak_selections`. The
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`while` loop with `shift` iterates through the arguments one by one.
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Only variables actually mentioned in the body of the shell expansion will
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be exported into the shell's environment. For example:
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Only variables actually mentioned in the body of the shell expansion or
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in passed arguments will be exported into the shell's environment.
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For example:
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----
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echo %sh{ env | grep ^kak_ }
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----
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... will find none of Kakoune's special environment variables, but:
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... will not find any of Kakoune's special environment variables, but:
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----
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echo %sh{ env | grep ^kak_ # kak_session }
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@ -162,6 +164,15 @@ echo %sh{ env | grep ^kak_ # kak_session }
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... will find the `$kak_session` variable because it was mentioned by name
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in a comment, even though it wasn't directly used.
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----
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define-command -params .. eval-shell %{ echo %sh{ eval "$@" } }
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eval-shell 'echo $kak_session'
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----
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... will also find the `$kak_session` variable because it was mentioned by name
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in the command arguments, which are automatically made available to shell blocks
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as "$@"
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TIP: These environment variables are also available in other contexts where
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Kakoune uses a shell command, such as the `|`, `!` or `$` normal mode commands
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(See <<keys#,`:doc keys`>>).
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@ -45,6 +45,9 @@ struct {
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unsigned int version;
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StringView notes;
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} constexpr version_notes[] = { {
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0,
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"» kak_* appearing in shell arguments will be added to the environment\n"
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}, {
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20240518,
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"» Fix tests failing on some platforms\n"
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}, {
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@ -141,12 +141,13 @@ Shell spawn_shell(const char* shell, StringView cmdline,
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}
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template<typename GetValue>
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Vector<String> generate_env(StringView cmdline, const Context& context, GetValue&& get_value)
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Vector<String> generate_env(StringView cmdline, ConstArrayView<String> params, const Context& context, GetValue&& get_value)
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{
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static const Regex re(R"(\bkak_(quoted_)?(\w+)\b)");
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Vector<String> env;
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for (auto&& match : RegexIterator{cmdline.begin(), cmdline.end(), re})
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auto add_matches = [&](StringView s) {
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for (auto&& match : RegexIterator{s.begin(), s.end(), re})
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{
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StringView name{match[2].first, match[2].second};
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StringView shell_name{match[0].first, match[0].second};
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@ -165,6 +166,10 @@ Vector<String> generate_env(StringView cmdline, const Context& context, GetValue
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env.push_back(format("kak_{}{}={}", quoted, name, get_value(name, quoting)));
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} catch (runtime_error&) {}
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}
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};
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add_matches(cmdline);
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for (auto&& param : params)
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add_matches(param);
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return env;
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}
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@ -265,13 +270,13 @@ std::pair<String, int> ShellManager::eval(
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const DebugFlags debug_flags = context.options()["debug"].get<DebugFlags>();
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const bool profile = debug_flags & DebugFlags::Profile;
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if (debug_flags & DebugFlags::Shell)
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write_to_debug_buffer(format("shell:\n{}\n----\n", cmdline));
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write_to_debug_buffer(format("shell:\n{}\n----\nargs: {}\n----\n", cmdline, join(shell_context.params | transform(shell_quote), ' ')));
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auto start_time = profile ? Clock::now() : Clock::time_point{};
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Optional<CommandFifos> command_fifos;
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auto kak_env = generate_env(cmdline, context, [&](StringView name, Quoting quoting) {
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auto kak_env = generate_env(cmdline, shell_context.params, context, [&](StringView name, Quoting quoting) {
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if (name == "command_fifo" or name == "response_fifo")
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{
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if (not command_fifos)
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@ -377,7 +382,7 @@ std::pair<String, int> ShellManager::eval(
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Shell ShellManager::spawn(StringView cmdline, const Context& context,
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bool open_stdin, const ShellContext& shell_context)
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{
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auto kak_env = generate_env(cmdline, context, [&](StringView name, Quoting quoting) {
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auto kak_env = generate_env(cmdline, shell_context.params, context, [&](StringView name, Quoting quoting) {
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if (auto it = shell_context.env_vars.find(name); it != shell_context.env_vars.end())
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return it->value;
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return join(get_val(name, context) | transform(quoter(quoting)), ' ', false);
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