Update dependency xterm to v4.19.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
xterm	4.18.0 -> 4.19.0

---

Release Notes

xtermjs/xterm.js

v4.19.0

Compare Source

🚀 Features

• The minimum contrast ratio feature will now change luminance in the opposite direction if the contrast ratio isn't met (#​3806, #​3808) via @​Tyriar. For example a red foreground on a slightly darker red background will try lighten the color and if the minimumContrastRatio option isn't met when #FFFFFF is reached it will try moving it towards #000000. This can cause somewhat unexpected results by changing explicitly styled whites to blacks for example but it's really good for accessibility.
• The library now supports parsing #rgb, #rgba, rgb(r, g, b) and rgba(r, g, b, a) color formats (#​3815, #​3819, #​3823) via @​ChaseKnowlden, @​Tyriar
• Opaque selectionBackground is now supported in the DOM renderer (#​3839) via @​Tyriar
• The symbol powerline font glyphs now use custom rendering when ITerminalOptions.customGlyphs is enabled (#​3856, #​3862, #​3866) via @​Tyriar
  
  This has multiple benefits:
  • A patched powerlines font doesn't need to be installed to render the most common characters
  • Ugly lines due to anti-aliasing that can appear no longer do
  • The glyphs always use greyscale anti-aliasing (not sub-pixel)
  • ITerminalOptions.lineHeight is taken into account when rendering the glyph

📦 API

• The overview ruler is a companion feature to the decorations introduced in 4.18.0 which shows little indicators on the scroll bar (#​3676, #​3687, #​3688, #​3689, #​3693, #​3694, #​3695, #​3697, #​3702, #​3711, #​3723, #​3730, #​3733, #​3738, #​3788, #​3791, #​3792, #​3841) via @​meganrogge, @​Tyriar. To use it, add the overviewRulerOptions property to a decoration's IDecorationOptions and it will automatically show up in the overview ruler.

  const marker = term.addMarker(1);
  const decoration = term.registerDecoration({
    marker,
    x: 5,
    overviewRulerOptions: {
      color: '#FF0000',
      position: 'left'
    }
  });
  decoration.onRender(() => {
    decoration.element.style.backgroundColor = 'red';
  });

  The width of the resulting overview ruler is controlled by ITerminalOptions.overviewRulerWidth.
• Decorations can now change a cell's background and foreground colors (#​3775, #​3782) via @​Tyriar. When this is set, the minimum contrast ratio feature will also be in effect.

  const decoration = term.registerDecoration({
    marker,
    backgroundColor: '#ff0000',
    foregroundColor: '#ffffff'
  });

• Decorations can now specify the layer property to allow rendering above the selection (#​3785, #​3800) via @​Tyriar

  const decoration = term.registerDecoration({
    marker,
    layer: 'top'
  });

• There's a new selectionForeground theme color, when set this will use a static color for selections (#​3813) via @​Tyriar

  const term = new Terminal({
    theme: {
      selectionBackground: '#​000000',
      selectionForeground: '#FFFFFF'
    }
  });

🐞 Bug fixes

• Fix triple click selection edge case where initial line was getting unselected (#​3669) via @​silamon
• Fixing edge cases when clearing decorations via Terminal.clear (#​3671, #​3868) via @​meganrogge
• Handle missing compositionend events for Sogou IME (#​3680) via @​Eugeny
• Fix a bug when running emacs by preferring ST over BEL (#​3704) via @​meganrogge
• Fix Alt-N/E/U handling in macOS, handle Alt-Shift-Letter (#​3726) via @​Eugeny
• Fix caps lock while IMEs are being used preventing lowercase input (#​3728) via @​serkodev
• Exclude powerline characters from the minimum contrast ratio feature (#​3740, #​3742) via @​meganrogge
• Send ctrl modifier for page up/down sequences (#​3761) via @​Tyriar
• Send record separator on ctrl+@​ (#​3763) via @​robinfai
• Switching from webgl to dom renderer will now correctly reposition decorations (#​3779) via @​Tyriar
• Decorations are now rendered in the same frame as the buffer, ensuring they stay in sync (#​3796, #​3818) via @​meganrogge
• Fire onSelectionChange when Terminal.select is called (#​3805) via @​Tyriar
• Padding is now taken into account when converting mouse coordinates to cell positions (#​3826) via @​Tyriar
• Exclude box drawing and block glyphs from the minimum contrast ratio as they are typically used to blend with background colors (#​3844) via @​meganrogge
• Fix a minimum contrast ratio edge case with inverted text in the DOM renderer (#​3846) via @​meganrogge
• Only send the wheel mouse event when scrolling a line or more (#​3869) via @​pfitzseb

📝 Documentation and internal improvements

• Replace internal use of getOption/setOption with options (#​3667) via @​childrentime
• Lint code using putout (#​3674) via @​coderaiser
• Improve the way the scroll bar is hidden when scrollback is 0 (#​3678) via @​silamon
• Remove unwanted console.log (#​3685) via @​Tyriar
• Replace deprecated String.prototype.substr (#​3713) via @​CommanderRoot
• Dependency updates (#​3714, #​3715) via @​dependabot
• Consolidate powerline glyph detection (#​3743, #​3756) via @​meganrogge
• Speed up decoration rendering (#​3769) via @​Tyriar
• Enable the search highlight all matches feature in the demo by default (#​3786) via @​Tyriar
• Simplify CSS rules (#​3787) via @​Tyriar
• Add a warning in the demo's implementation calling out the importance of flow control (#​3789) via @​Tyriar
• Deflake link provider tests (#​3822) via @​Tyriar
• Standardize internal handling of colors for simplicity (#​3824) via @​Tyriar
• Add convenient powerline symbol test button to demo (#​3828) via @​Tyriar
• Organize demo test buttons (#​3852) via @​umaxyon
• Re-enable webgl minimum contrast ratio tests (#​3863) via @​Tyriar
• Fix a typo in serialize addon test (#​3865) via @​mmis1000

🎉 New real-world use cases

• hack.courses (#​3837) via @​lp1dev
• Render (#​3871) via @​crcastle
• CloudTTY (#​3876) via yankay

---

📥 Addons

xterm-addon-search

• Support showing all find matches by leveraging decorations (#​3698, #​3707, #​3708, #​3709, #​3710, #​3736, #​3750, #​3757, #​3767, #​3768, #​3811, #​3835) via @​meganrogge, @​Tyriar
• Return the number of results when searching (#​3716, #​3731, #​3745, #​3752, #​3793, #​3831, #​3874) via @​meganrogge
• Allow external styling of the active result decoration via .xterm-find-active-result-decoration (#​3802) via @​Tyriar

xterm-addon-serialize

• Restore cursor style during serialize (#​3682) via @​Tyriar

xterm-addon-web-links

• Expose urlRegex in public API (#​3719) via @​LuckyGeck
• Handle wrapped lines properly (#​3718) via @​LuckyGeck

xterm-addon-webgl

• Simplified and sped up selection rendering by leveraging the decorations feature (#​3782, #​3860) via @​Tyriar

🤝 Compatible addon versions

• xterm-addon-attach@0.6.0
• xterm-addon-fit@0.5.0
• xterm-addon-ligatures@0.5.3
• xterm-addon-search@0.9.0
• xterm-addon-serialize@0.7.0
• xterm-addon-unicode11@​0.3.0
• xterm-addon-web-links@0.6.0
• xterm-addon-webgl@0.12.0

---

🌐 Website

• Add decorations to the demo (add decorations to demo xtermjs/xtermjs.org#170) via @​meganrogge
• Fix a typo in hooks guide (fix "CRFL" xtermjs/xtermjs.org#171) via @​fixator10
• Fix handling of }, | and ~ in the demo (Add CharCode Demo doesn't support xtermjs/xtermjs.org#175) via @​MOBUMIN

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, click this checkbox.

---

This PR has been generated by Mend Renovate. View repository job log here.