In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+2190 (LEFTWARDS ARROW).
Normalize gets to leftarrow for corpus form.
\gets \leftarrow\to\rightarrow\longrightarrow\mapsto\xrightarrow\Rightarrow\Leftrightarrow\leftarrow\longmapsto\hookrightarrow\Longrightarrow\gets