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Sat, 24 Apr 2021 13:51:32 -0700 (PDT) MIME-Version: 1.0 From: Marlon Richert Date: Sat, 24 Apr 2021 23:50:56 +0300 Message-ID: Subject: [RFC][PATCH] Add zrestart() To: Zsh hackers list Content-Type: multipart/mixed; boundary="000000000000d09d5405c0be1346" X-Seq: 48690 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: --000000000000d09d5405c0be1346 Content-Type: text/plain; charset="UTF-8" Attached patch adds the zrestart() function that was discussed previously in workers/48408 and before (and also after). It was suggested originally that `zle -fn` be used to validate the dotfiles. However, I discovered that this can fail needlessly, for example, if a dotfile references dynamically named directories. Instead, to verify that the shell can restart without errors, I start an interactive subshell with an empty command and capture its return value and standard error. Likewise, it was suggested at some point that some form of `zsh -l && exit` be used instead of `exec zsh`. However, it was later brought up that, if the user would restart the shell many times this way, this could potentially exhaust the available process IDs. Thus, I use `exec zsh` after all. Hopefully, the validation above provides enough safeguards. At least the user doesn't have to worry about mistyping `zsh` as the argument to `exec` this way. --000000000000d09d5405c0be1346 Content-Type: text/plain; charset="US-ASCII"; name="0001-Add-zrestart.txt" Content-Disposition: attachment; filename="0001-Add-zrestart.txt" Content-Transfer-Encoding: base64 Content-ID: X-Attachment-Id: f_knw7rbi60 RnJvbSBmMGZiZDBmNzc2OWQ2NzU2MjAxNjhkNDEwOWE5YTFlNzQxMGY5ZTc4IE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBNYXJsb24gUmljaGVydCA8bWFybG9uLnJpY2hlcnRAZ21haWwu Y29tPgpEYXRlOiBTYXQsIDI0IEFwciAyMDIxIDIzOjM0OjQ3ICswMzAwClN1YmplY3Q6IFtQQVRD SF0gQWRkIHpyZXN0YXJ0KCkKCi0tLQogRG9jL1pzaC9jb250cmliLnlvICAgICAgfCAgNSArKysr KwogRnVuY3Rpb25zL01pc2MvenJlc3RhcnQgfCA0MiArKysrKysrKysrKysrKysrKysrKysrKysr KysrKysrKysrKysrKysrKwogMiBmaWxlcyBjaGFuZ2VkLCA0NyBpbnNlcnRpb25zKCspCiBjcmVh dGUgbW9kZSAxMDA2NDQgRnVuY3Rpb25zL01pc2MvenJlc3RhcnQKCmRpZmYgLS1naXQgYS9Eb2Mv WnNoL2NvbnRyaWIueW8gYi9Eb2MvWnNoL2NvbnRyaWIueW8KaW5kZXggOGJmMWEyMDhlLi5lZmQx OTBmN2EgMTAwNjQ0Ci0tLSBhL0RvYy9ac2gvY29udHJpYi55bworKysgYi9Eb2MvWnNoL2NvbnRy aWIueW8KQEAgLTQ2NDksNiArNDY0OSwxMSBAQCBTZWUgYFJlY29tcGlsaW5nIEZ1bmN0aW9ucycK IGlmem1hbihhYm92ZSlcCiBpZm56bWFuKChub2RlcmVmKFV0aWxpdGllcykpKS4KICkKK2ZpbmRl eCh6cmVzdGFydCkKK2l0ZW0odHQoenJlc3RhcnQpKSgKK1RoaXMgZnVuY3Rpb24gdGVzdHMgd2hl dGhlciB0aGUgc2hlbGwgaXMgYWJsZSB0byByZXN0YXJ0IHdpdGhvdXQgZXJyb3IgYW5kLCBpZiAK K3NvLCByZXN0YXJ0cyB0aGUgc2hlbGwuCispCiBmaW5kZXgoenN0eWxlKykKIGl0ZW0odHQoenN0 eWxlKykgdmFyKGNvbnRleHQpIHZhcihzdHlsZSkgdmFyKHZhbHVlKSBbIHR0KCspIHZhcihzdWJj b250ZXh0KSB2YXIoc3R5bGUpIHZhcih2YWx1ZSkgLi4uIF0pKAogVGhpcyBtYWtlcyBkZWZpbmlu ZyBzdHlsZXMgYSBiaXQgc2ltcGxlciBieSB1c2luZyBhIHNpbmdsZSBgdHQoKyknIGFzIGEKZGlm ZiAtLWdpdCBhL0Z1bmN0aW9ucy9NaXNjL3pyZXN0YXJ0IGIvRnVuY3Rpb25zL01pc2MvenJlc3Rh cnQKbmV3IGZpbGUgbW9kZSAxMDA2NDQKaW5kZXggMDAwMDAwMDAwLi4xZmMxN2MwM2IKLS0tIC9k ZXYvbnVsbAorKysgYi9GdW5jdGlvbnMvTWlzYy96cmVzdGFydApAQCAtMCwwICsxLDQyIEBACisj CisjIFJlc3RhcnRzIHRoZSBzaGVsbCBpZiBhbmQgb25seSBpZiBpdCBjYW4gcmVzdGFydCB3aXRo b3V0IGVycm9yLgorIworCitlbXVsYXRlIC1MUiB6c2gKK3sKKyAgIyBTb21lIHVzZXJzIGV4cG9y dCAkWkRPVERJUiwgd2hpY2ggY2FuIG1lc3MgdGhpbmdzIHVwLgorICBsb2NhbCB6ZG90ZGlyPSRa RE9URElSCisgIHVuc2V0IFpET1RESVIKKyAgCisgIHByaW50ICdWYWxpZGF0aW5nLi4uJworICAK KyAgIyBUcnkgaWYgdGhlIHNoZWxsIGNhbiBzdGFydCB1cCB3aXRob3V0IGVycm9ycy4gUGFzc2lu ZyBhbiBlbXB0eSBjb21tYW5kIAorICAjIGVuc3VyZXMgdGhhdCB0aGUgc3Vic2hlbGwgZXhpdHMg aW1tZWRpYXRlbHkgYWZ0ZXIgZXhlY3V0aW5nIGFsbCBkb3RmaWxlcy4KKyAgIyBXZSBzdXBwcmVz cyBzdGFuZGFyZCBvdXQsIHNpbmNlIHdlJ3JlIGludGVyZXN0ZWQgaW4gc3RhbmRhcmQgZXJyb3Ig b25seS4KKyAgc2V0b3B0IG11bHRpb3MKKyAgbG9jYWwgZXJyPSIkKHpzaCAtLWludGVyYWN0aXZl IC0tbW9uaXRvciAtLXpsZSAtYyAnJyAyPiYxID4gL2Rldi9udWxsKSIKKyAgbG9jYWwgLWkgcmV0 PSQ/CisgIAorICBpZiAoKCByZXQgKSkgfHwgW1sgLW4gJGVyciBdXTsgdGhlbgorICAgIFtbIC1u ICRlcnIgXV0gJiYKKyAgICAgICAgcHJpbnQgLXJ1MiAtLSAiJGVyciIKKyAgICBwcmludCAtbnUy ICdWYWxpZGF0aW9uIGZhaWxlZCcKKyAgICAoKCByZXQgKSkgJiYKKyAgICAgICAgcHJpbnQgLW51 MiAiIHdpdGggZXhpdCBzdGF0dXMgJHJldCIKKyAgICBbWyAtbiAkZXJyIF1dICYmCisgICAgICAg IHByaW50IC1udTIgJy4gUGxlYXNlIGZpeCB0aGUgZXJyb3IocykgYWJvdmUnCisgICAgcHJpbnQg LXUyICcuJworICAgIHByaW50IC11MiAnUmVzdGFydCBhYm9ydGVkLicKKyAgICAKKyAgICAoKCBy ZXQgKSkgfHwKKyAgICAgICAgKCggcmV0ID0gNjQgKSkgICMgRVhfREFUQUVSUjsgc2VlIGBtYW4g MyBzeXNleGl0c2AuCisgICAgICAgIAorICAgIHJldHVybiByZXQKKyAgICAKKyAgZWxzZQorICAg IHByaW50ICdSZXN0YXJ0aW5nLi4uJworICAgIGV4ZWMgenNoCisgIGZpCit9IGFsd2F5cyB7Cisg IFpET1RESVI9JHpkb3RkaXIKK30KLS0gCjIuMzEuMQoK --000000000000d09d5405c0be1346--