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Enable syntax highlighting #214

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ae7c95f
Enable syntax highlighting for %%sql cells
rschroll Jul 27, 2022
3b19cb4
Better check for Jupyter or IPython globals
rschroll Jul 28, 2022
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15 changes: 10 additions & 5 deletions src/sql/magic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -286,9 +286,14 @@ def _persist_dataframe(self, raw, conn, user_ns, append=False):
def load_ipython_extension(ip):
"""Load the extension in IPython."""

# this fails in both Firefox and Chrome for OS X.
# I get the error: TypeError: IPython.CodeCell.config_defaults is undefined

# js = "IPython.CodeCell.config_defaults.highlight_modes['magic_sql'] = {'reg':[/^%%sql/]};"
# display_javascript(js, raw=True)
js = """
let codeCell = (window.Jupyter ?? window.IPython)?.CodeCell;
if (codeCell) {
let highlightModes = (codeCell.options_default ?? codeCell.config_defaults).highlight_modes;
if (!highlightModes['magic_sql'])
highlightModes['magic_sql'] = {'reg': []};
highlightModes['magic_sql']['reg'].push(/^%%sql/);
}
"""
display_javascript(js, raw=True)
ip.register_magics(SqlMagic)