... More to come, but needed some place to put PiotrSikora’s handy little commands (and will expand on them later):
find src/ -type f -name "*.c" -exec grep -B1 NGX_HTTP_SRV_CONF {} \; | grep ngx_string | cut -d\" -f2
find src/ -type f -name "*.c" -exec grep -B2 NGX_HTTP_VAR {} \; | grep ngx_string | cut -d\" -f2
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