🐛 Terminal raw mode race condition with less

[injust]

It seems like there is a race condition between delta and less when setting the terminal raw mode. See details in gwsw/less#579.

---

Raw diff output:

diff --git a/bun.lockb b/bun.lockb
index 6e77ff9..5ad9c73 100755
--- a/bun.lockb
+++ b/bun.lockb
@@ -1,30 +1,30 @@
 # THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
 # yarn lockfile v1
-# bun ./bun.lockb --hash: E7A8918271656BAE-4fe268304deac5d4-4AD032B6865CD714-16943c77077cbeeb
+# bun ./bun.lockb --hash: 974DCA90254370C7-0f6e1b631608181f-F5E2DDA39E8F3ADB-92ef899f5f642846
 
 
 "@babel/code-frame@^7.0.0":
-  version "7.24.7"
-  resolved "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.24.7.tgz"
-  integrity sha512-BcYH1CVJBO9tvyIZ2jVeXgSIMvGZ2FDRvDdOIVQyuklNKSsx+eppDEBq/g47Ayw+RqNFE+URvOShmf+f/qwAlA==
+  version "7.25.7"
+  resolved "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.25.7.tgz"
+  integrity sha512-0xZJFNE5XMpENsgfHYTw8FbX4kv53mFLn2i3XPoq69LyhYSCBJtitaHx9QnsVTrsogI4Z3+HtEfZ2/GFPOtf5g==
   dependencies:
+    "@babel/highlight" "^7.25.7"
     picocolors "^1.0.0"
-    "@babel/highlight" "^7.24.7"
 
-"@babel/helper-validator-identifier@^7.24.7":
-  version "7.24.7"
-  resolved "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.24.7.tgz"
-  integrity sha512-rR+PBcQ1SMQDDyF6X0wxtG8QyLCgUB0eRAGguqRLfkCA87l7yAP7ehq8SNj96OOGTO8OBV70KhuFYcIkHXOg0w==
+"@babel/helper-validator-identifier@^7.25.7":
+  version "7.25.7"
+  resolved "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.25.7.tgz"
+  integrity sha512-AM6TzwYqGChO45oiuPqwL2t20/HdMC1rTPAesnBCgPCSF1x3oN9MVUwQV2iyz4xqWrctwK5RNC8LV22kaQCNYg==
 
-"@babel/highlight@^7.24.7":
-  version "7.24.7"
-  resolved "https://registry.npmjs.org/@babel/highlight/-/highlight-7.24.7.tgz"
-  integrity sha512-EStJpq4OuY8xYfhGVXngigBJRWxftKX9ksiGDnmlY3o7B/V7KIAc9X4oiK87uPJSc/vs5L869bem5fhZa8caZw==
+"@babel/highlight@^7.25.7":
+  version "7.25.7"
+  resolved "https://registry.npmjs.org/@babel/highlight/-/highlight-7.25.7.tgz"
+  integrity sha512-iYyACpW3iW8Fw+ZybQK+drQre+ns/tKpXbNESfrhNnPLIklLbXr7MYJ6gPEd0iETGLOK+SxMjVvKb/ffmk+FEw==
   dependencies:
+    "@babel/helper-validator-identifier" "^7.25.7"
     chalk "^2.4.2"
     js-tokens "^4.0.0"
     picocolors "^1.0.0"
-    "@babel/helper-validator-identifier" "^7.24.7"
 
 "@eslint/eslintrc@^0.3.0":
   version "0.3.0"
@@ -527,9 +527,9 @@ eslint-import-resolver-node@^0.3.6:
     resolve "^1.22.4"
 
 eslint-module-utils@^2.6.2:
-  version "2.11.0"
-  resolved "https://registry.npmjs.org/eslint-module-utils/-/eslint-module-utils-2.11.0.tgz"
-  integrity sha512-gbBE5Hitek/oG6MUVj6sFuzEjA/ClzNflVrLovHi/JgLdC7fiN5gLAY1WIPW1a0V5I999MnsrvVrCOGmmVqDBQ==
+  version "2.12.0"
+  resolved "https://registry.npmjs.org/eslint-module-utils/-/eslint-module-utils-2.12.0.tgz"
+  integrity sha512-wALZ0HFoytlyh/1+4wuZ9FJCD/leWHQzzrxJ8+rebyReSLk7LApMyd3WJaLVoN+D5+WIdJyDK1c6JnE65V4Zyg==
   dependencies:
     debug "^3.2.7"
 
@@ -682,9 +682,9 @@ fast-levenshtein@^2.0.6:
   integrity sha512-DCXu6Ifhqcks7TZKY3Hxp3y6qphY5SJZmrWMDrKcERSOXWQdMhU9Ig/PYrzyw/ul9jOIyh0N4M0tbC5hodg8dw==
 
 fast-uri@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.npmjs.org/fast-uri/-/fast-uri-3.0.1.tgz"
-  integrity sha512-MWipKbbYiYI0UC7cl8m/i/IWTqfC8YXsqjzybjddLsFjStroQzsHXkc73JutMvBiXmOvapk+axIl79ig5t55Bw==
+  version "3.0.3"
+  resolved "https://registry.npmjs.org/fast-uri/-/fast-uri-3.0.3.tgz"
+  integrity sha512-aLrHthzCjH5He4Z2H9YZ+v6Ujb9ocRuW6ZzkJQOrTxleEijANq4v1TsaPaVG1PZcuurEzrLcWRyYBYXD5cEiaw==
 
 file-entry-cache@^6.0.0:
   version "6.0.1"
@@ -712,9 +712,9 @@ flat-cache@^3.0.4:
   resolved "https://registry.npmjs.org/flat-cache/-/flat-cache-3.2.0.tgz"
   integrity sha512-CYcENa+FtcUKLmhhqyctpclsq7QF38pKjZHsGNiSQF5r4FtoKDWabFDl3hzaEQMvT1LHEysw5twgLvpYYb4vbw==
   dependencies:
-    flatted "^3.2.9"
     keyv "^4.5.3"
     rimraf "^3.0.2"
+    flatted "^3.2.9"
 
 flatted@^3.2.9:
   version "3.3.1"
@@ -1389,9 +1389,9 @@ path-type@^3.0.0:
     pify "^3.0.0"
 
 picocolors@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.npmjs.org/picocolors/-/picocolors-1.1.0.tgz"
-  integrity sha512-TQ92mBOW0l3LeMeyLV6mzy/kWr8lkd/hp3mTg7wYK7zJhuBStmGMBG0BdeDZS/dZx1IukaX6Bk11zcln25o1Aw==
+  version "1.1.1"
+  resolved "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz"
+  integrity sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==
 
 pify@^3.0.0:
   version "3.0.0"
@@ -1470,14 +1470,14 @@ read-pkg-up@^3.0.0:
     read-pkg "^3.0.0"
 
 regexp.prototype.flags@^1.5.2:
-  version "1.5.2"
-  resolved "https://registry.npmjs.org/regexp.prototype.flags/-/regexp.prototype.flags-1.5.2.tgz"
-  integrity sha512-NcDiDkTLuPR+++OCKB0nWafEmhg/Da8aUPLPMQbK+bxKKCm1/S5he+AqYa4PlMCVBalb4/yxIRub6qkEx5yJbw==
+  version "1.5.3"
+  resolved "https://registry.npmjs.org/regexp.prototype.flags/-/regexp.prototype.flags-1.5.3.tgz"
+  integrity sha512-vqlC04+RQoFalODCbCumG2xIOvapzVMHwsyIGM/SIE8fRhFFsXeH8/QQ+s0T0kDAhKc4k30s73/0ydkHQz6HlQ==
   dependencies:
-    call-bind "^1.0.6"
+    call-bind "^1.0.7"
     define-properties "^1.2.1"
     es-errors "^1.3.0"
-    set-function-name "^2.0.1"
+    set-function-name "^2.0.2"
 
 regexpp@^3.0.0, regexpp@^3.1.0:
   version "3.2.0"
@@ -1565,7 +1565,7 @@ set-function-length@^1.2.1:
     gopd "^1.0.1"
     has-property-descriptors "^1.0.2"
 
-set-function-name@^2.0.1, set-function-name@^2.0.2:
+set-function-name@^2.0.2:
   version "2.0.2"
   resolved "https://registry.npmjs.org/set-function-name/-/set-function-name-2.0.2.tgz"
   integrity sha512-7PGFlmtwsEADb0WYyvCMa1t+yke6daIG4Wirafur5kcf+MhUnPms1UeR0CKQdTZD81yESwMHbtn+TR+dMviakQ==

[avih]

Just to add here what the linked "less" issue has, and might be related:

On Windows delta sets the console codepage to UTF8 even when stdout is not a tty, which causes issues when piped to other applications (because it restores the codepage when delta exits, but the other app doesn't know that).

So it might be a general delta issue where the terminal is initialized even when stdout is not a tty - but in such case it shouldn't touch the terminal state.

[injust]

On Windows delta sets the console codepage to UTF8 even when stdout is not a tty, which causes issues when piped to other applications

Just to clarify: For my problem, stdout is a tty. I am not piping delta to less -- delta is running less by itself. So from delta's perspective, stdout is a tty.

[avih]

Just to clarify: For my problem, stdout is a tty. I am not piping delta to less -- delta is running less by itself. So from delta's perspective, stdout is a tty.

Oh. But still, depending on how it's implemented, it might still be piping into less. But good point. I didn't realize it's not piped into less "externally".