20 Recursive Directory Searching
(Enhanced in 4.0H.)
Expert users can use recursive directory specifications in TRUETEX
configuration items.
By appending a double backslash to any directory, you indicate that you
want TRUETEX to search that directory and any subdirectories thereof.
For example, you can specify the TEXINPUTS to include a directory
like \truetex\macros\\, meaning you want TRUETEX to look for
.tex input files in directory \truetex\macros and any
subdirectories. TRUETEX searches the initial directory you specify, and
thereafter in the ``depth-first'' order.
Use caution with this feature. If you specify recursive searching
in a large directory tree or across a network, performance may suffer as
TRUETEX walks the tree for each file opened. LATEX and many other
TEX macros test for non-existent files (such as LATEX .aux
files) by attempting a file-open, and this
can result in lengthy searches with no apparent progress.