Random Observations

Some random observations from looking at various aspects of TeX. I’ll move these into proper pages eventually.

Manual index entries

Apart from (semi-)automatically indexed identifiers, module names, and other such parts of the Pascal program, there are also 74 manual index entries in the TeX program.

Some are people:

Amble, Ole -> ['925']
Bosshard, Hans Rudolf -> ['458']
Ferguson, Michael John -> ['2']
Fuchs, David Raymond -> ['2', '583', '591']
Guibas, Leonidas Ioannis -> ['2']
Hedrick, Charles Locke -> ['3']
Jensen, Kathleen -> ['10']
Knuth, Donald Ervin -> ['2', '86', '693', '813', '891', '925', '997', '1154', '1371']
Liang, Franklin Mark -> ['2', '919']
Plass, Michael Frederick -> ['2', '813']
Poirot, Hercule -> ['1283']
Ramshaw, Lyle Harold -> ['539']
Sedgewick, Robert -> ['2']
Trabb Pardo, Luis Isidoro -> ['2']
Trickey, Howard Wellington -> ['2']
Vitter, Jeffrey Scott -> ['261']
Wirth, Niklaus -> ['10']
Wyatt, Douglas Kirk -> ['2']
Zabala Salelles, Ignacio Andrés -> ['2']

Some are places in TeX where certain subjects are defined:

alignment of rules with characters -> ['589']
ASCII code -> ['17', '503']
BigEndian order -> ['[540]']
character set dependencies -> ['23', '49']
check sum -> ['53', '542', '588']
Chinese characters -> ['134', '585']
current page -> ['980']
dirty \PASCAL -> ['[3]', '114', '172', '182', '186', '285', '812', '1331']
empty line at end of file -> ['486', '538']
extensions to \TeX -> ['2', '146', '1340']
font metric files -> ['539']
font parameters -> ['700', '701']
global definitions -> ['221', '279', '283']
hanging indentation -> ['847']
italic correction -> ['[543]']
Japanese characters -> ['134', '585']
leaders -> ['1374']
length of lines -> ['847']
null delimiter -> ['240', '1065']
oriental characters -> ['134', '585']
overflow in arithmetic -> ['9', '104']
overfull boxes -> ['854']
parameters for symbols -> ['700', '701']
penalties -> ['1102']
preamble -> ['768', '774']
preamble of \.{DVI} file -> ['617']
real addition -> ['1125']
real division -> ['658', '664', '673', '676', '810', '811', '1123', '1125']
real multiplication -> ['114', '186', '625', '634', '809', '1125']
reference counts -> ['150', '200', '201', '203', '275', '291', '307']
rules aligning with characters -> ['589']
Single-character primitives -> ['[267]']
sp -> ['104', '587']
square roots -> ['737']
string pool -> ['47', '1308']
subscripts -> ['754', '1175']
superscripts -> ['754', '1175']
token -> ['289']

Overlapping the previous, some are descriptions of parts of the TeX program:

action procedure -> ['[1029]']
conventions for representing stacks -> ['300']
data structure assumptions -> ['[161]', '164', '204', '816', '968', '981', '1289']
debugging -> ['7', '84', '96', '114', '165', '182', '1031', '1338']
dry rot -> ['95']
inner loop -> ['31', '112', '120', '121', '122', '123', '125', '127', '128', '130', '202', '324', '325', '341', '342', '343', '357', '365', '380', '399', '407', '554', '597', '611', '620', '651', '654', '655', '832', '835', '851', '852', '867', '1030', '1034', '1035', '1036', '1039', '1041']
recursion -> ['76', '78', '173', '180', '198', '202', '203', '366', '402', '407', '498', '527', '592', '618', '692', '719', '720', '725', '754', '949', '957', '959', '1333', '1375']
stack conventions -> ['300']
system dependencies -> ['2', '[3]', '4', '9', '10', '11', '12', '19', '21', '23', '26', '27', '28', '32', '33', '34', '35', '37', '38', '49', '56', '59', '72', '81', '84', '96', '109', '110', '112', '113', '161', '186', '241', '304', '313', '328', '485', '511', '512', '513', '514', '515', '516', '517', '518', '519', '520', '521', '523', '525', '538', '557', '564', '591', '595', '597', '798', '1331', '1332', '1333', '1338', '1340', '1379']
virtual memory -> ['126']

And revealed: the disgusting biology of TeX:

brain -> ['1029'] PART 46: THE CHIEF EXECUTIVE (procedure main_control)

eyes and mouth -> ['332'] PART 24: GETTING THE NEXT TOKEN
mastication -> ['341'] procedure get_next

fingers -> ['511'] PART 29: FILE NAMES

stomach -> ['402'] PART 26: BASIC SCANNING SUBROUTINES

bowels -> ['592'] PART 32: SHIPPING PAGES OUT
defecation -> ['597'] procedure write_dvi

Things that reminded me of TeX:


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