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moving: the current chunk cannot be beyond the last chunk of a line 

When determining the leftedge of the current chunk, it is not simply
the leftedge that corresponds to the placewewant, but the leftedge that
corresponds to the minimum of the placewewant and the full line span.

This fixes https://savannah.gnu.org/bugs/?50653.
master
Benno Schulenberg 2017-03-27 17:34:13 +02:00
parent c277cd6e5b
commit 244a503ddc
1 changed files with 12 additions and 2 deletions
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14
src/move.c
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@ -463,7 +463,12 @@ void do_up(bool scroll_only)
#ifndef NANO_TINY #ifndef NANO_TINY
if (ISSET(SOFTWRAP)) { if (ISSET(SOFTWRAP)) {
leftedge = (openfile->placewewant / editwincols) * editwincols; size_t realspan = strlenpt(openfile->current->data);
if (openfile->placewewant < realspan)
realspan = openfile->placewewant;
leftedge = (realspan / editwincols) * editwincols;
target_column = openfile->placewewant % editwincols; target_column = openfile->placewewant % editwincols;
} }
#endif #endif
@ -514,7 +519,12 @@ void do_down(bool scroll_only)
#ifndef NANO_TINY #ifndef NANO_TINY
if (ISSET(SOFTWRAP)) { if (ISSET(SOFTWRAP)) {
leftedge = (openfile->placewewant / editwincols) * editwincols; size_t realspan = strlenpt(openfile->current->data);
if (openfile->placewewant < realspan)
realspan = openfile->placewewant;
leftedge = (realspan / editwincols) * editwincols;
target_column = openfile->placewewant % editwincols; target_column = openfile->placewewant % editwincols;
} }
#endif #endif