* hard coded tab length of 8 in update_port_lf() ?
@ 2014-12-16 15:03 Marco Heisig
0 siblings, 0 replies; only message in thread
From: Marco Heisig @ 2014-12-16 15:03 UTC (permalink / raw)
To: guile-user
Hi,
I use Guile to program a small compiler. I track the source location of
my individual tokens using port-line and port-column. However my column
numbers are slightly off depending on the number of tabs in that line.
It seems the Guile ports count each tab as up to 8 characters.
This is the relevant code in ports.h
#define SCM_TABCOL(port) do {SCM_COL (port) += 8 - SCM_COL (port) %
8;} while (0)
I think it would be more intuitive to count one tab as one character
(afaik gcc does it this way). Is there a good reason for the current
behavior?
Sincerely,
Marco
PS: Writing a compiler in Guile is great fun! Thanks to all the Guile
developers for this awesome piece of software.
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2014-12-16 15:03 hard coded tab length of 8 in update_port_lf() ? Marco Heisig
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