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authorJune McEnroe <june@causal.agency>2020-12-23 14:19:58 -0500
committerJune McEnroe <june@causal.agency>2020-12-23 15:56:18 -0500
commit4e5215cb6185108ade86af49f123b13674fe9587 (patch)
tree0157b48b88af880c20646a7a1d975c0933dea720 /bin/LICENSE
parentBind libedit's secret filename completion function (diff)
downloadsrc-4e5215cb6185108ade86af49f123b13674fe9587.tar.gz
src-4e5215cb6185108ade86af49f123b13674fe9587.zip
Cache the expanded prompt for editline
Previously, the prompt would be expanded every time editline called the
getprompt callback. I think the code may have been written assuming that
editline only calls getprompt once per prompt, but it may actually call
it many times, for instance every time you type backspace. This results
not only in slower editing from expanding complex prompts repeatedly, it
also consumes more and more stack memory each time getprompt is called.
This can be seen by setting PS1 to some command substitution, typing
many characters at the prompt, then holding backspace and observing
memory usage. Thankfully all this stack memory is freed between prompts
by the stackmark calls around el_gets.

This change causes prompt expansion to always happen in the setprompt
call, as it would when editline is disabled, and a cached copy of the
prompt is saved for getprompt to return every time editline calls it.
Since getprompt is no longer doing expansion, the stackmark calls
surrounding el_gets can be removed.
Diffstat (limited to 'bin/LICENSE')
0 files changed, 0 insertions, 0 deletions
9-27 15:28:16 -0400'>2017-09-27Remove leading blank linesJune McEnroe 2017-09-27Add merge.c to READMEJune McEnroe 2017-09-03Assert client coords are valid after movementJune McEnroe 2017-09-03Relicense AGPLJune McEnroe 2017-09-01Revert "Add client readOnly mode"June McEnroe 2017-09-01Remove clientRemove call from clientCastJune McEnroe 2017-09-01Add client readOnly modeJune McEnroe 2017-08-31Clean up merge toolJune McEnroe 2017-08-31Choose B for tiles with equal modify timesJune McEnroe 2017-08-31Add quick data file merge toolJune McEnroe 2017-08-30Use only foreground color for selecting spawnJune McEnroe 2017-08-29Add four additional spawnsJune McEnroe 2017-08-28Add respawningJune McEnroe 2017-08-26Move license above includesJune McEnroe 2017-08-26Snapshot metadataJune McEnroe 2017-08-26Add meta.c to READMEJune McEnroe 2017-08-26Use MakefileJune McEnroe