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go-debug

Conditional debug logging for Go libraries.

View the docs.

Installation

$ go get github.com/tj/go-debug

Example

package main
import . "github.com/tj/go-debug"import"time"vardebug=Debug("single")
funcmain() {
for {
debug("sending mail")
debug("send email to %s", "tobi@segment.io")
debug("send email to %s", "loki@segment.io")
debug("send email to %s", "jane@segment.io")
time.Sleep(500*time.Millisecond)
}
}

If you run the program with the DEBUG=* environment variable you will see:

15:58:15.115 34us 33us single - sending mail
15:58:15.116 3us 3us single - send email to tobi@segment.io
15:58:15.116 1us 1us single - send email to loki@segment.io
15:58:15.116 1us 1us single - send email to jane@segment.io
15:58:15.620 504ms 504ms single - sending mail
15:58:15.620 6us 6us single - send email to tobi@segment.io
15:58:15.620 4us 4us single - send email to loki@segment.io
15:58:15.620 4us 4us single - send email to jane@segment.io
15:58:16.123 503ms 503ms single - sending mail
15:58:16.123 7us 7us single - send email to tobi@segment.io
15:58:16.123 4us 4us single - send email to loki@segment.io
15:58:16.123 4us 4us single - send email to jane@segment.io
15:58:16.625 501ms 501ms single - sending mail
15:58:16.625 4us 4us single - send email to tobi@segment.io
15:58:16.625 4us 4us single - send email to loki@segment.io
15:58:16.625 5us 5us single - send email to jane@segment.io

A timestamp and two deltas are displayed. The timestamp consists of hour, minute, second and microseconds. The left-most delta is relative to the previous debug call of any name, followed by a delta specific to that debug function. These may be useful to identify timing issues and potential bottlenecks.

The DEBUG environment variable

Executables often support --verbose flags for conditional logging, however libraries typically either require altering your code to enable logging, or simply omit logging all together. go-debug allows conditional logging to be enabled via the DEBUG environment variable, where one or more patterns may be specified.

For example suppose your application has several models and you want to output logs for users only, you might use DEBUG=models:user. In contrast if you wanted to see what all database activity was you might use DEBUG=models:*, or if you're love being swamped with logs: DEBUG=*. You may also specify a list of names delimited by a comma, for example DEBUG=mongo,redis:*.

The name given should be the package name, however you can use whatever you like.

License

MIT

About

backup for github.com/tj/go-debug

Resources

Readme
Activity
Custom properties

Stars

2 stars

Watchers

2 watching

Forks

2 forks
Report repository

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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debug_test.go
Repository files navigation
go-debug
Conditional debug logging for Go libraries.
View the docs.
Installation
$ go get github.com/tj/go-debug

Example
package main
import . "github.com/tj/go-debug"import"time"vardebug=Debug("single")
funcmain() {
for {
debug("sending mail")
debug("send email to %s", "tobi@segment.io")
debug("send email to %s", "loki@segment.io")
debug("send email to %s", "jane@segment.io")
time.Sleep(500*time.Millisecond)
}
}
If you run the program with the DEBUG=* environment variable you will see:
15:58:15.115 34us 33us single - sending mail
15:58:15.116 3us 3us single - send email to tobi@segment.io
15:58:15.116 1us 1us single - send email to loki@segment.io
15:58:15.116 1us 1us single - send email to jane@segment.io
15:58:15.620 504ms 504ms single - sending mail
15:58:15.620 6us 6us single - send email to tobi@segment.io
15:58:15.620 4us 4us single - send email to loki@segment.io
15:58:15.620 4us 4us single - send email to jane@segment.io
15:58:16.123 503ms 503ms single - sending mail
15:58:16.123 7us 7us single - send email to tobi@segment.io
15:58:16.123 4us 4us single - send email to loki@segment.io
15:58:16.123 4us 4us single - send email to jane@segment.io
15:58:16.625 501ms 501ms single - sending mail
15:58:16.625 4us 4us single - send email to tobi@segment.io
15:58:16.625 4us 4us single - send email to loki@segment.io
15:58:16.625 5us 5us single - send email to jane@segment.io

A timestamp and two deltas are displayed. The timestamp consists of hour, minute, second and microseconds. The left-most delta is relative to the previous debug call of any name, followed by a delta specific to that debug function. These may be useful to identify timing issues and potential bottlenecks.
The DEBUG environment variable
Executables often support --verbose flags for conditional logging, however
libraries typically either require altering your code to enable logging,
or simply omit logging all together. go-debug allows conditional logging
to be enabled via the DEBUG environment variable, where one or more
patterns may be specified.
For example suppose your application has several models and you want
to output logs for users only, you might use DEBUG=models:user. In contrast
if you wanted to see what all database activity was you might use DEBUG=models:*,
or if you're love being swamped with logs: DEBUG=*. You may also specify a list of names delimited by a comma, for example DEBUG=mongo,redis:*.
The name given should be the package name, however you can use whatever you like.
License
MIT
About
backup for github.com/tj/go-debug
Resources
Readme
Activity
Custom properties
Stars
2 stars
Watchers
2 watching
Forks
2 forks
Report repository
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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24 Commits
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Readme.md
debug.go
debug.go
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debug_test.go
Repository files navigation
go-debug
Conditional debug logging for Go libraries.
View the docs.
Installation
$ go get github.com/tj/go-debug

Example
package main
import . "github.com/tj/go-debug"import"time"vardebug=Debug("single")
funcmain() {
for {
debug("sending mail")
debug("send email to %s", "tobi@segment.io")
debug("send email to %s", "loki@segment.io")
debug("send email to %s", "jane@segment.io")
time.Sleep(500*time.Millisecond)
}
}
If you run the program with the DEBUG=* environment variable you will see:
15:58:15.115 34us 33us single - sending mail
15:58:15.116 3us 3us single - send email to tobi@segment.io
15:58:15.116 1us 1us single - send email to loki@segment.io
15:58:15.116 1us 1us single - send email to jane@segment.io
15:58:15.620 504ms 504ms single - sending mail
15:58:15.620 6us 6us single - send email to tobi@segment.io
15:58:15.620 4us 4us single - send email to loki@segment.io
15:58:15.620 4us 4us single - send email to jane@segment.io
15:58:16.123 503ms 503ms single - sending mail
15:58:16.123 7us 7us single - send email to tobi@segment.io
15:58:16.123 4us 4us single - send email to loki@segment.io
15:58:16.123 4us 4us single - send email to jane@segment.io
15:58:16.625 501ms 501ms single - sending mail
15:58:16.625 4us 4us single - send email to tobi@segment.io
15:58:16.625 4us 4us single - send email to loki@segment.io
15:58:16.625 5us 5us single - send email to jane@segment.io

A timestamp and two deltas are displayed. The timestamp consists of hour, minute, second and microseconds. The left-most delta is relative to the previous debug call of any name, followed by a delta specific to that debug function. These may be useful to identify timing issues and potential bottlenecks.
The DEBUG environment variable
Executables often support --verbose flags for conditional logging, however
libraries typically either require altering your code to enable logging,
or simply omit logging all together. go-debug allows conditional logging
to be enabled via the DEBUG environment variable, where one or more
patterns may be specified.
For example suppose your application has several models and you want
to output logs for users only, you might use DEBUG=models:user. In contrast
if you wanted to see what all database activity was you might use DEBUG=models:*,
or if you're love being swamped with logs: DEBUG=*. You may also specify a list of names delimited by a comma, for example DEBUG=mongo,redis:*.
The name given should be the package name, however you can use whatever you like.
License
MIT
About
backup for github.com/tj/go-debug
Resources
Readme
Activity
Custom properties
Stars
2 stars
Watchers
2 watching
Forks
2 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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NameName
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History.md
Makefile
Makefile
Readme.md
Readme.md
debug.go
debug.go
debug_test.go
debug_test.go
Repository files navigation
go-debug
Conditional debug logging for Go libraries.
View the docs.
Installation
$ go get github.com/tj/go-debug

Example
package main
import . "github.com/tj/go-debug"import"time"vardebug=Debug("single")
funcmain() {
for {
debug("sending mail")
debug("send email to %s", "tobi@segment.io")
debug("send email to %s", "loki@segment.io")
debug("send email to %s", "jane@segment.io")
time.Sleep(500*time.Millisecond)
}
}
If you run the program with the DEBUG=* environment variable you will see:
15:58:15.115 34us 33us single - sending mail
15:58:15.116 3us 3us single - send email to tobi@segment.io
15:58:15.116 1us 1us single - send email to loki@segment.io
15:58:15.116 1us 1us single - send email to jane@segment.io
15:58:15.620 504ms 504ms single - sending mail
15:58:15.620 6us 6us single - send email to tobi@segment.io
15:58:15.620 4us 4us single - send email to loki@segment.io
15:58:15.620 4us 4us single - send email to jane@segment.io
15:58:16.123 503ms 503ms single - sending mail
15:58:16.123 7us 7us single - send email to tobi@segment.io
15:58:16.123 4us 4us single - send email to loki@segment.io
15:58:16.123 4us 4us single - send email to jane@segment.io
15:58:16.625 501ms 501ms single - sending mail
15:58:16.625 4us 4us single - send email to tobi@segment.io
15:58:16.625 4us 4us single - send email to loki@segment.io
15:58:16.625 5us 5us single - send email to jane@segment.io

A timestamp and two deltas are displayed. The timestamp consists of hour, minute, second and microseconds. The left-most delta is relative to the previous debug call of any name, followed by a delta specific to that debug function. These may be useful to identify timing issues and potential bottlenecks.
The DEBUG environment variable
Executables often support --verbose flags for conditional logging, however
libraries typically either require altering your code to enable logging,
or simply omit logging all together. go-debug allows conditional logging
to be enabled via the DEBUG environment variable, where one or more
patterns may be specified.
For example suppose your application has several models and you want
to output logs for users only, you might use DEBUG=models:user. In contrast
if you wanted to see what all database activity was you might use DEBUG=models:*,
or if you're love being swamped with logs: DEBUG=*. You may also specify a list of names delimited by a comma, for example DEBUG=mongo,redis:*.
The name given should be the package name, however you can use whatever you like.
License
MIT
About
backup for github.com/tj/go-debug
Resources
Readme
Activity
Custom properties
Stars
2 stars
Watchers
2 watching
Forks
2 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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Readme.md
debug.go
debug.go
debug_test.go
debug_test.go
Repository files navigation
go-debug
Conditional debug logging for Go libraries.
View the docs.
Installation
$ go get github.com/tj/go-debug

Example
package main
import . "github.com/tj/go-debug"import"time"vardebug=Debug("single")
funcmain() {
for {
debug("sending mail")
debug("send email to %s", "tobi@segment.io")
debug("send email to %s", "loki@segment.io")
debug("send email to %s", "jane@segment.io")
time.Sleep(500*time.Millisecond)
}
}
If you run the program with the DEBUG=* environment variable you will see:
15:58:15.115 34us 33us single - sending mail
15:58:15.116 3us 3us single - send email to tobi@segment.io
15:58:15.116 1us 1us single - send email to loki@segment.io
15:58:15.116 1us 1us single - send email to jane@segment.io
15:58:15.620 504ms 504ms single - sending mail
15:58:15.620 6us 6us single - send email to tobi@segment.io
15:58:15.620 4us 4us single - send email to loki@segment.io
15:58:15.620 4us 4us single - send email to jane@segment.io
15:58:16.123 503ms 503ms single - sending mail
15:58:16.123 7us 7us single - send email to tobi@segment.io
15:58:16.123 4us 4us single - send email to loki@segment.io
15:58:16.123 4us 4us single - send email to jane@segment.io
15:58:16.625 501ms 501ms single - sending mail
15:58:16.625 4us 4us single - send email to tobi@segment.io
15:58:16.625 4us 4us single - send email to loki@segment.io
15:58:16.625 5us 5us single - send email to jane@segment.io

A timestamp and two deltas are displayed. The timestamp consists of hour, minute, second and microseconds. The left-most delta is relative to the previous debug call of any name, followed by a delta specific to that debug function. These may be useful to identify timing issues and potential bottlenecks.
The DEBUG environment variable
Executables often support --verbose flags for conditional logging, however
libraries typically either require altering your code to enable logging,
or simply omit logging all together. go-debug allows conditional logging
to be enabled via the DEBUG environment variable, where one or more
patterns may be specified.
For example suppose your application has several models and you want
to output logs for users only, you might use DEBUG=models:user. In contrast
if you wanted to see what all database activity was you might use DEBUG=models:*,
or if you're love being swamped with logs: DEBUG=*. You may also specify a list of names delimited by a comma, for example DEBUG=mongo,redis:*.
The name given should be the package name, however you can use whatever you like.
License
MIT
About
backup for github.com/tj/go-debug
Resources
Readme
Activity
Custom properties
Stars
2 stars
Watchers
2 watching
Forks
2 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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24 Commits
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example
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Readme.md
debug.go
debug.go
debug_test.go
debug_test.go
Repository files navigation
go-debug
Conditional debug logging for Go libraries.
View the docs.
Installation
$ go get github.com/tj/go-debug

Example
package main
import . "github.com/tj/go-debug"import"time"vardebug=Debug("single")
funcmain() {
for {
debug("sending mail")
debug("send email to %s", "tobi@segment.io")
debug("send email to %s", "loki@segment.io")
debug("send email to %s", "jane@segment.io")
time.Sleep(500*time.Millisecond)
}
}
If you run the program with the DEBUG=* environment variable you will see:
15:58:15.115 34us 33us single - sending mail
15:58:15.116 3us 3us single - send email to tobi@segment.io
15:58:15.116 1us 1us single - send email to loki@segment.io
15:58:15.116 1us 1us single - send email to jane@segment.io
15:58:15.620 504ms 504ms single - sending mail
15:58:15.620 6us 6us single - send email to tobi@segment.io
15:58:15.620 4us 4us single - send email to loki@segment.io
15:58:15.620 4us 4us single - send email to jane@segment.io
15:58:16.123 503ms 503ms single - sending mail
15:58:16.123 7us 7us single - send email to tobi@segment.io
15:58:16.123 4us 4us single - send email to loki@segment.io
15:58:16.123 4us 4us single - send email to jane@segment.io
15:58:16.625 501ms 501ms single - sending mail
15:58:16.625 4us 4us single - send email to tobi@segment.io
15:58:16.625 4us 4us single - send email to loki@segment.io
15:58:16.625 5us 5us single - send email to jane@segment.io

A timestamp and two deltas are displayed. The timestamp consists of hour, minute, second and microseconds. The left-most delta is relative to the previous debug call of any name, followed by a delta specific to that debug function. These may be useful to identify timing issues and potential bottlenecks.
The DEBUG environment variable
Executables often support --verbose flags for conditional logging, however
libraries typically either require altering your code to enable logging,
or simply omit logging all together. go-debug allows conditional logging
to be enabled via the DEBUG environment variable, where one or more
patterns may be specified.
For example suppose your application has several models and you want
to output logs for users only, you might use DEBUG=models:user. In contrast
if you wanted to see what all database activity was you might use DEBUG=models:*,
or if you're love being swamped with logs: DEBUG=*. You may also specify a list of names delimited by a comma, for example DEBUG=mongo,redis:*.
The name given should be the package name, however you can use whatever you like.
License
MIT
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backup for github.com/tj/go-debug
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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go-debug
Conditional debug logging for Go libraries.
View the docs.
Installation
$ go get github.com/tj/go-debug

Example
package main
import . "github.com/tj/go-debug"import"time"vardebug=Debug("single")
funcmain() {
for {
debug("sending mail")
debug("send email to %s", "tobi@segment.io")
debug("send email to %s", "loki@segment.io")
debug("send email to %s", "jane@segment.io")
time.Sleep(500*time.Millisecond)
}
}
If you run the program with the DEBUG=* environment variable you will see:
15:58:15.115 34us 33us single - sending mail
15:58:15.116 3us 3us single - send email to tobi@segment.io
15:58:15.116 1us 1us single - send email to loki@segment.io
15:58:15.116 1us 1us single - send email to jane@segment.io
15:58:15.620 504ms 504ms single - sending mail
15:58:15.620 6us 6us single - send email to tobi@segment.io
15:58:15.620 4us 4us single - send email to loki@segment.io
15:58:15.620 4us 4us single - send email to jane@segment.io
15:58:16.123 503ms 503ms single - sending mail
15:58:16.123 7us 7us single - send email to tobi@segment.io
15:58:16.123 4us 4us single - send email to loki@segment.io
15:58:16.123 4us 4us single - send email to jane@segment.io
15:58:16.625 501ms 501ms single - sending mail
15:58:16.625 4us 4us single - send email to tobi@segment.io
15:58:16.625 4us 4us single - send email to loki@segment.io
15:58:16.625 5us 5us single - send email to jane@segment.io

A timestamp and two deltas are displayed. The timestamp consists of hour, minute, second and microseconds. The left-most delta is relative to the previous debug call of any name, followed by a delta specific to that debug function. These may be useful to identify timing issues and potential bottlenecks.
The DEBUG environment variable
Executables often support --verbose flags for conditional logging, however
libraries typically either require altering your code to enable logging,
or simply omit logging all together. go-debug allows conditional logging
to be enabled via the DEBUG environment variable, where one or more
patterns may be specified.
For example suppose your application has several models and you want
to output logs for users only, you might use DEBUG=models:user. In contrast
if you wanted to see what all database activity was you might use DEBUG=models:*,
or if you're love being swamped with logs: DEBUG=*. You may also specify a list of names delimited by a comma, for example DEBUG=mongo,redis:*.
The name given should be the package name, however you can use whatever you like.
License
MIT
About
backup for github.com/tj/go-debug
Resources
Readme
Activity
Custom properties
Stars
2 stars
Watchers
2 watching
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2 forks
Report repository
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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24 Commits
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example
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debug.go
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debug_test.go
debug_test.go
Repository files navigation
go-debug
Conditional debug logging for Go libraries.
View the docs.
Installation
$ go get github.com/tj/go-debug

Example
package main
import . "github.com/tj/go-debug"import"time"vardebug=Debug("single")
funcmain() {
for {
debug("sending mail")
debug("send email to %s", "tobi@segment.io")
debug("send email to %s", "loki@segment.io")
debug("send email to %s", "jane@segment.io")
time.Sleep(500*time.Millisecond)
}
}
If you run the program with the DEBUG=* environment variable you will see:
15:58:15.115 34us 33us single - sending mail
15:58:15.116 3us 3us single - send email to tobi@segment.io
15:58:15.116 1us 1us single - send email to loki@segment.io
15:58:15.116 1us 1us single - send email to jane@segment.io
15:58:15.620 504ms 504ms single - sending mail
15:58:15.620 6us 6us single - send email to tobi@segment.io
15:58:15.620 4us 4us single - send email to loki@segment.io
15:58:15.620 4us 4us single - send email to jane@segment.io
15:58:16.123 503ms 503ms single - sending mail
15:58:16.123 7us 7us single - send email to tobi@segment.io
15:58:16.123 4us 4us single - send email to loki@segment.io
15:58:16.123 4us 4us single - send email to jane@segment.io
15:58:16.625 501ms 501ms single - sending mail
15:58:16.625 4us 4us single - send email to tobi@segment.io
15:58:16.625 4us 4us single - send email to loki@segment.io
15:58:16.625 5us 5us single - send email to jane@segment.io

A timestamp and two deltas are displayed. The timestamp consists of hour, minute, second and microseconds. The left-most delta is relative to the previous debug call of any name, followed by a delta specific to that debug function. These may be useful to identify timing issues and potential bottlenecks.
The DEBUG environment variable
Executables often support --verbose flags for conditional logging, however
libraries typically either require altering your code to enable logging,
or simply omit logging all together. go-debug allows conditional logging
to be enabled via the DEBUG environment variable, where one or more
patterns may be specified.
For example suppose your application has several models and you want
to output logs for users only, you might use DEBUG=models:user. In contrast
if you wanted to see what all database activity was you might use DEBUG=models:*,
or if you're love being swamped with logs: DEBUG=*. You may also specify a list of names delimited by a comma, for example DEBUG=mongo,redis:*.
The name given should be the package name, however you can use whatever you like.
License
MIT
About
backup for github.com/tj/go-debug
Resources
Readme
Activity
Custom properties
Stars
2 stars
Watchers
2 watching
Forks
2 forks
Report repository
Releases
Packages
Contributors
Languages