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Background
Polyagony is a family of hypothetical esolangs where the source code is laid out on a specifically shaped board before running it. It's similar to Hexagony, but various uniform tilings can be used instead of a simple hexagon. The shape of the board and the tiling used is defined by the "...
Python 3, 1558 1553 1419 1417 1347 1258 1106 bytes
L=list
M=map
Q=len
m=~0
G,H,J,K,Y,I=[0,1],[0,m],[1,0],[m,0],[m,1],[1,m]
z=lambda p,u:L(M(sum,zip(p,u)))
def f(a):
def U(p,c,u,a,d):
try:u=[J,I,Y,H,G,I,K][d.index(p)]
except:0
return F+c*a,z(p,u),u
a=L(M(L,a.split('\n')));p=0,0;n=a[0]
fo...
A screen consisted of some LED segments like such:
\$
\begin{matrix}|\\|\\\end{matrix}
\begin{matrix}-\\-\\-\\\end{matrix}
\begin{matrix}|\\|\\\end{matrix}
\begin{matrix}-\\-\\-\\\end{matrix}
\begin{matrix}|\\|\\\end{matrix}\cdots
\begin{matrix}-\\-\\-\\\end{matrix}
\begin{matrix}|\\|\\\end{matri...
The following sequence will do what you want, given an already selected block of text:
y (yank the selected text, into the " register by default)
/ (enter search mode)
(\ V) (optional, enter "very no magic" mode*)
Ctrl+r " (insert text from " register)
Enter (Engage!)
(*) "very no magic" mode...
