v2026.04.28

Changes

• Try to fix startup crash in RHEL. #915

v2026.04.27

Changes

• Enable support for text elements in SVG.

Now we can design our windows in any style we like: Luna from Windows XP? No problemo!

v2026.04.26

Changes

• Fix android builds (template keyword).

v2026.04.25

Changes

• AnyPlex:
  • Implement recursive layer rendering.
  • Make the 'o' (ontop) attribute unique.
  • Add anyplex sample to infopage.
  • Allow removal of all registered images using id=* (asterisk) as id:

    "`e]app; id=* <></>`a"

v2026.04.24

Changes

• Revise grapheme cluster parsing.
• Terminal:
  • Implement XTGETTCAP.
  • Implement DECRQM.
  • Fix color text copy (regression).
  • Don't repeat arrow keys on mouse wheel in alternate scroll mode (one mouse event - one key press).
• Fix android builds (std::execution).
• Add option to print available fonts vtm --fonts [v[erbose]].

v2026.04.19

Changes

• Implement DSR and DECRQSS 'm'+'r'. #909
• AnyPlex: Re-rasterize (resize) layers on cell size change.

v2026.04.18

Changes

• This release is not compatible with previous releases.
• AnyPlex Protocol, (tracked in #902):
  • Implement image layering (recursive rendering is not implemented yet).
  • Fix deletion of image references in the terminal scrollback.

An example of a three-layer composition using two images (tiger.svg and grade.svg as a stretched background):

Attribute Scoping

Attributes are divided into Shared (object-wide), Layer (layer specific) and Unique (per-instance/cell).

• Shared Attributes: l, u, v, uw, vh, x, y, w, h, fit, rt, a, f, o. Global to all instances of the id.
• Layer Attributes: All Shared attributes can be overridden per layer inside l=id(key=val).
• Unique Attributes: W, H, r, c, gc. Specific to the instance and the grid slice.

Attributes

Attribute	Scope	Value/Range	Default	Description
l	Shared	<id>[/sub-id][(<layer attrs>)]	empty string ("")	Adds a layer. Can be specified multiple times.

v2026.04.16

Known Issues

• References to deleted images from the scrollback are not removed. (fixed in cb895a7)
• There is no way to do image inheritance and composition.

Changes

• This release is not compatible with previous releases.
• AnyPlex Protocol, (tracked in #902):
  • Change the way images are displayed. See the updated specification.

Attributes

Attribute	Scope	Value/Range	Default	Description
id	-	<id>[/sub-id]	empty string ("")	Object reference ID.
u, v	Shared	float	0.0	Top-left of the source crop (0.0-1.0).
uw, vh	Shared	float	1.0	Size of the source crop (0.0-1.0). Negative flips.
x, y	Shared	float	0.0	Offset of the Clipping Box inside the W x H area (cells).
w, h	Shared	float (0.0-65535.0]	W, H	Dimensions of the Clipping Box inside the W x H area (cells).
fit	Shared	inside|outside|stretch|none	inside	Fit logic: How the crop fits into the w x h Clipping Box. (none = exact pixels).
tr	Shared	0..7	0	Transform: Decimal value of the 3-bit state [FlipY][FlipX][SwapXY].
rt	Shared	0|90|180|270	0	Rotate: CCW rotation of the source (degrees).
f	Shared	n|v|h|vh|hv	n	Flip: n = none, v = vertical, h = horizontal.
a	Shared	[l|c|r][t|m|b]	cm	Align: 2D alignment within the Clipping Box and the W x H area. (l = left, c = center, r = right, t = top, m = middle, b = bottom).
o	Shared	0|1	0	Ontop: 0 = under text, 1 = over text.
gc	Unique	string	ASCII Space (0x20) " "	Grapheme cluster to write to cells (will be scaled to a 1x1 cell size).
W, H	Unique	0..65535	0	Grid Container: Physical footprint in cells. If 0, nothing is rendered (registration only).
r, c	Unique	0..65535	0	Row, column 1-based slicing index for target cell slice. (0 = full height/width, 1..n = specific cell/slice).

Rendering & Interaction

• Normalized Source Viewport: The source document is first projected onto a virtual canvas of size 1.0 by 1.0. A rectangular fragment (crop) is then extracted from this canvas using normalized coordinates u, v (top-left) and uw, vh (size), where 1.0 equals the full canvas dimension. Negative values for uw or vh cause the extracted fragment to be flipped along the respective axis.
• Target Rectangular Area: The grid footprint is explicitly defined by the unique attributes W and H. The range of affected cell indices starts at the current cursor position and spans [0 .. W-1] horizontally and [0 .. H-1] vertically. If W or H is 0, no cells are modified, and the object is only registered in the cache.
• Pixel-wise Precision:
  • Content Positioning: The image fragment is scaled according to fit and aligned within the Clipping Box (w x h) using the a attribute.
  • Box Positioning: This Clipping Box is then aligned within the Grid Container (W x H) using the same a attribute.
  • Offsets: Shared x and y values are applied as final pixel offsets from the resulting position.
  • Final Cut: The Grid Container acts as a strict physical mask; any pixels falling outside the W x H cell area are not rendered.
• Persistence: Metadata (Object Reference + Unique attributes) is stored per-cell to survive scrollback and ensure logical linking for rectangular reflow, using only an implementation-defined minimum of data to minimize memory overhead.
• Cursor Position: Anchored at the top-left; moves to the cell immediately following the bottom-right corner of the Grid Container (W x H) after output.
• Destructivity:
  • If the gc attribute is not empty, the provided grapheme cluster is written to every cell in the target area, replacing existing text and SGR attributes.
  • If gc is empty, the output is non-destructive; existing text and SGR attributes remain visually intact.
  • Subsequent text written over the area does not destroy the underlying object. Metadata remains in the cell until explicitly replaced.
• Selection & Highlighting: When a cell is selected (e.g., mouse selection or SGR 7), the frontend applies a 0.5 opacity mask to the object's pixels within that specific cell to ensure the selection remains visible.
• Searchability: Any text contained within the document (e.g., <text> in SVG) is rendered as part of the graphic and is not indexed for terminal text search.
• Layering & Transparency: Supports per-pixel alpha. The o(ontop) attribute determines Z-order:
  • 0: [Cell BG] -> [Object] -> [Text]
  • 1: [Cell BG] -> [Text] -> [Object]
  • The cell's background color always remains at the bottom. The terminal cursor is always drawn on top. Alpha blending should be performed in linear color space.
• Foreground Color & Security: The underlying cell SGR foreground color maps to currentColor (for SVG). All external references (e.g., http://...) are ignored for security purposes.

Example

• https://commons.wikimedia.org/wiki/File:Ghostscript_Tiger.svg
• anyplex_test.ps1:

  "`e[H`e]app; gc='' id=tiger w=20 h=20 W=50 H=12 $(cat Ghostscript_Tiger.svg) f=h`a"
  while ($true)
  {
    for ($i = 0; $i -lt 40; $i++)
    {
        "`e[H`e]app;gc='' id=tiger x={0:N3} uw=$i f=n`a" -f (($i - 40) / 30)
        Start-Sleep -Milliseconds 10
    }
    for ($i = 39; $i -gt 0; $i--)
    {
        "`e[H`e]app;gc='' id=tiger x={0:N3} uw=$i f=h`a" -f ($i / 30)
        Start-Sleep -Milliseconds 10
    }
    for ($i = 0; $i -lt 40; $i++)
    {
        "`e[H`e]app;gc='' id=tiger x={0:N3} uw=0 f=n`a" -f ((-$i) / 30)
        Start-Sleep -Milliseconds 10
    }
  }

v2026.04.11

Changes

• This release is not compatible with previous releases.
• AnyPlex Protocol, (tracked in #902):
  • Implement image multiplexing.
  • Re-rasterize when cell metrics change.
  • Allow <></> to be used as an empty document.

v2026.04.10

Changes

• AnyPlex:
  • Fix crash on empty SVG canvas.
  • Make gc=' ' (whitespace) by default.
  • Fix updating SVG document for the same id.
  • Allow viewport clearing by printing \e[H\e]app\a (or \e[H\e]app;id=non_registered_id\a if id="" is registered).

    "`e[H`e]app`a"

Animation Example

Use vtm -r term pwsh to test on Windows (multiplexing is not implemented yet).

• https://commons.wikimedia.org/wiki/File:Ghostscript_Tiger.svg
• anyplex_test.ps1:

  "`e[H`e]app; gc='' id=tiger align=left width=80 height=20 $(cat Ghostscript_Tiger.svg) flip=h`a"
  while ($true)
  {
      for ($i = -160; $i -lt 160; $i++)
      {
          "`e[H`e]app;gc='' align=left id=tiger flip=h dx={0:N3}`a" -f ($i / 10)
          Start-Sleep -Milliseconds 15
      }
      for ($i = 320; $i -gt 0; $i--)
      {
          "`e[H`e]app;gc='' align=left id=tiger dx={0:N3}`a" -f ($i / 10)
          Start-Sleep -Milliseconds 15
      }
  }