Extensions/comfyui-string-join
ComfyUI Extension

comfyui-string-join

ComfyUI node: join any number of strings with a custom delimiter (auto-growing inputs, lists, muted/bypassed sources ignored)

By Ramon-Balaguer·Created a day ago·Updated a day ago· 0
Ramon-Balaguer/comfyui-string-join
Nodes1
On cloudLocal install
Categoryutils/string
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Updateda day ago

Nodes (1)

String Join (Multi)

Stitch ten strings into one, commas included

utils/string
Readme

ComfyUI String Join (Multi)

A ComfyUI custom node that joins any number of strings into a single string using a configurable delimiter.

String Join (Multi) in ComfyUI

Five sources connected: String 3 is muted and String 5 is bypassed, so they are simply left out → un gato, en la playa, al atardecer.

Features

  • Auto-growing input – connect string0 and a new string1 socket appears, and so on (up to 100).
  • Lists supported – any socket also accepts a list of strings; every item is joined.
  • Custom delimiter – escape sequences \n, \t, \r and \\ are understood (e.g. \n joins one per line).
  • Muted / bypassed sources are ignored – if an upstream node is muted or bypassed, its string just doesn't count; the node keeps working. If all sources are gone, the output is an empty string.
  • skip_empty – drop empty (or whitespace-only) strings so you never get a, , b.
  • strip – trim leading/trailing whitespace from each string before joining.

Inputs / output

| Name | Type | Default | Description | |---|---|---|---| | delimiter | STRING | , | Separator placed between strings. Supports \n, \t, \r, \\. | | skip_empty | BOOLEAN | true | Skip empty or whitespace-only strings. | | strip | BOOLEAN | false | Trim each string before joining. | | string0 … string99 | STRING (optional) | – | Strings or lists of strings, joined in socket order. | | output STRING | STRING | – | The joined string. |

Bypass note: ComfyUI's bypass passes a node's input through to its output when the types match. A bypassed node with no STRING input (like a primitive string) is dropped and doesn't count; a bypassed node that has a STRING input forwards that input instead.

Installation

Requires a recent ComfyUI with the V3 node API (dynamic "Autogrow" inputs) – tested on ComfyUI 0.41.0.

cd ComfyUI/custom_nodes
git clone https://github.com/Ramon-Balaguer/comfyui-string-join.git

Restart ComfyUI and search for String Join (Multi) (category utils/string, aliases: join, concat). No extra dependencies.

An example workflow is included in example_workflows/ and also appears in ComfyUI's template browser.

En español

Nodo para ComfyUI que une todos los strings que conectes en un único string separado por el delimitador que indiques.

  • Las entradas crecen solas: al conectar una aparece la siguiente (hasta 100). También aceptan listas de strings.
  • El delimitador admite \n, \t, \r y \\.
  • Si un nodo de origen está muteado o en bypass, ese string simplemente no cuenta y el nodo sigue funcionando.
  • skip_empty omite strings vacíos y strip quita los espacios de cada string.

Instalación: clona el repositorio en ComfyUI/custom_nodes y reinicia ComfyUI.

License

MIT