```tex
\usepackage{newunicodechar}

\DeclareUnicodeCharacter{0101}{\=a}
\newunicodechar{⏎}{$\hookleftarrow$} % \hookleftarrow ≅ ↩︎
```

Add replacements for unicode chars
user
```tex
\usepackage{newunicodechar}

\DeclareUnicodeCharacter{0101}{\=a}
\newunicodechar{⏎}{$\hookleftarrow$} % \hookleftarrow ≅ ↩︎
\newunicodechar{🔑}{key}
\newunicodechar{🦄}{unicorn}
\newunicodechar{👾}{alien}
```
assistant