Commit e44b56d1 authored by Committed by Stefan Monnier
Fix setting and resetting of scroll-with-delete
The start and end lines of the scroll region must to be in the range [0,term-height). There are few placees that incorrectly set the end line of the scroll region to term-height which is outside the valid range. Combined with another off-by-one error in term-set-scroll-region's clamping logic, this would cause term-scroll-with-delete to be unnecessarily turned on. * lisp/term.el (term-scroll-start,term-scroll-end): Use defvar-local to define the variables and document the valid range of values that the variables can take. (term--last-line): New function to calculate the 0-based index of the last line. (term--reset-scroll-region): New function to reset the scroll region to the full height of the terminal. (term-mode,term-reset-size,term-reset-terminal): Call term--reset-scroll-region to reset the scroll region. (term-set-scroll-region): Fix the off-by-one error in the clamping logic which allowed term-scroll-end to have values outside the valid range [0,term-height).
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